Data Dictionary . use "S:\Pop_Health\IPH_CRG\Clinical Research Group\HAND\ASL MRI pilot\Database\Cleaned data\ASL_ > HIV_final_concise_dataset.dta", clear (ASL and untreated HIV dataset - UCL Lewis Haddow 2012-2015) . desc Contains data from S:\Pop_Health\IPH_CRG\Clinical Research Group\HAND\ASL MRI pilot\Database\Clean > ed data\ASL_HIV_final_concise_dataset.dta obs: 36 ASL and untreated HIV dataset - UCL Lewis Haddow 2012-2015 vars: 121 5 Jun 2015 16:17 size: 17,676 (_dta has notes) -------------------------------------------------------------------------------------------------- storage display value variable name type format label variable label -------------------------------------------------------------------------------------------------- studyid str4 %9s ihds1 double %10.0g 1 ihds ZCFT float %9.0g CFT Z score ZCOWAT float %9.0g COWAT Z score vfef_Zcombo float %9.0g Verbal fluency EF Z score ZDETlmn float %4.2f Detection task Z score ZIDNlmn float %4.2f Identification task Z score ZONBacc float %4.2f One-back accuracy task Z score ZONBlmn float %4.2f One-back speed task Z score ZOCLacc float %4.2f One card learning task Z score ZGMLter float %4.2f Maze learning Z score ZGMRter float %4.2f Maze recall Z score ZISLcor float %4.2f List learning Z score ZISRLcor float %4.2f List recall Z score speed_Zcombo float %4.2f SIP Z score attwm_Zcombo float %4.2f Working memory Z score maze_Zcombo float %4.2f Executive function and visual memory Z score list_Zcombo float %4.2f Verbal learning and recall Z score edu_years byte %29.0g edu Education group hibp_bl byte %1.0f PMH of hypertension diabetes byte %1.0f PMH of diabetes hyperchol byte %1.0f PMH of hypercholesterolaemia myoc_infarct byte %1.0f PMH of myocardial infarct angina byte %1.0f PMH of angina countryschool str19 %19s Country of schooling firstlang str18 %18s language hivstatus byte %8.0f posneg HIV status blmridate int %td Date of first MRI scan blmridone byte %3.0f yesno Was an MRI done? blmritime byte %2.0f Time (hrs) of first MRI blsbp float %3.0f Baseline SBP bldbp float %3.0f Baseline DBP blcd4 int %4.0f Baseline CD4 count blcd4p double %5.1f Baseline CD4 % blcd4date int %td Date of baseline CD4 blvl long %7.0f Baseline VL blvldate int %td Date of baseline VL glucose double %5.1f Random blood glucose glucdate int %td Date of last glucose tchol double %5.1f Random total cholesterol lipidsdate int %td Date of last lipids trig double %5.1f Random triglycerides hdl double %5.1f Random HDL ldl double %5.1f Random LDL age float %5.1f Age at baseline bllogvl float %4.2f Baseline log10 VL hivdiagyears float %5.1f Years since HIV diagnosis infectyears float %5.1f Years since HIV infection (if known) syphcode byte %27.0g syph Syphilis category syphyear int %10.0g Year of syphilis diagnosis hcvcode byte %22.0g hcv HCV category blmritext str87 %87s Baseline MRI report blmricode byte %17.0g mri Baseline MRI findings category ethcat byte %11.0g ethnic Ethnic group meanCBFLCN_rreg float %9.0g CBFLCN mean sliceLCN_rreg byte %8.0g CBFLCN slice meanCBFLLN_rreg float %9.0g CBFLLN mean sliceLLN_rreg byte %8.0g CBFLLN slice meanCBFRCN_rreg float %9.0g CBFRCN mean sliceRCN_rreg byte %8.0g CBFRCN slice meanCBFRLN_rreg float %9.0g CBFRLN mean sliceRLN_rreg byte %8.0g CBFRLN slice totalarea_rreg float %9.0g Total area of all 4 ROI meanCBFall_rreg float %9.0g Mean CBF across all 4 ROI CNarea_rreg float %9.0g Combined area of both caudates meanCBF_CN_rreg float %9.0g Mean CBF across both caudates LNarea_rreg float %9.0g Combined area of both LN meanCBF_LN_rreg float %9.0g Mean CBF across both LN qc_cbf byte %10.0g qc_cbf qc_r1 byte %10.0g qc_r1 qc_abv byte %10.0g qc_abv qc_att byte %10.0g qc_att qc_total byte %10.0g qc_total qc_artefact byte %10.0g qc_artefact qc_combined byte %10.0g qc_combined meanATT1LCN float %9.0g ATT1LCN mean meanATT1LLN float %9.0g ATT1LLN mean meanATT1RCN float %9.0g ATT1RCN mean meanATT1RLN float %9.0g ATT1RLN mean areaLCN float %9.0g ATT2LCN area meanATT2LCN float %9.0g ATT2LCN mean areaLLN float %9.0g ATT2LLN area meanATT2LLN float %9.0g ATT2LLN mean areaRCN float %9.0g ATT2RCN area meanATT2RCN float %9.0g ATT2RCN mean areaRLN float %9.0g ATT2RLN area meanATT2RLN float %9.0g ATT2RLN mean meanMVTTLCN float %9.0g meanMVTTRCN float %9.0g meanMVTTLLN float %9.0g meanMVTTRLN float %9.0g totalarea float %9.0g Total area of all 4 ROI meanATT1all float %9.0g Mean ATT1 across all 4 ROI meanATT2all float %9.0g Mean ATT2 across all 4 ROI meanMVTTall float %9.0g Mean MVTT across all 4 ROI CNarea float %9.0g Combined area of both caudates meanATT1_CN float %9.0g Mean ATT1 across both caudates meanATT2_CN float %9.0g Mean ATT2 across both caudates meanMVTT_CN float %9.0g Mean MVTT across both caudates LNarea float %9.0g Combined area of both LN meanATT1_LN float %9.0g Mean ATT1 across both LN meanATT2_LN float %9.0g Mean ATT2 across both LN meanMVTT_LN float %9.0g Mean MVTT across both LN any_cvd byte %9.0g lastsmoke byte %10.0g lastsmoke Last smoked smoker byte %19.0g smoker Smoking status smokingyears byte %9.0g Years as a smoker alc_cage byte %9.0g CAGE questionnaire score lastalc byte %11.0g lastalc alc_units float %9.0g lastcaf byte %11.0g lastalc caffnum float %9.0g Caffeine/week (equiv. cups coffee) caffamt int %9.0g Caffeine/week (est. milligrams) lastdrugs byte %9.0g lastdrugs ivdu byte %13.0g ivdu stim_drugs byte %9.0g Any stimulate used in past 3 months degree byte %9.0g postgrad byte %9.0g manageprof byte %9.0g employment byte %14.0g employment base_needs byte %17.0g basic -------------------------------------------------------------------------------------------------- Sorted by: studyid . codebook -------------------------------------------------------------------------------------------------- studyid (unlabeled) -------------------------------------------------------------------------------------------------- type: string (str4) unique values: 36 missing "": 0/36 examples: "0010" "0029" "0039" "0052" -------------------------------------------------------------------------------------------------- ihds1 1 ihds -------------------------------------------------------------------------------------------------- type: numeric (double) range: [8,12] units: .1 unique values: 6 missing .: 18/36 tabulation: Freq. Value 1 8 1 9 2 10 1 10.5 6 11 7 12 18 . -------------------------------------------------------------------------------------------------- ZCFT CFT Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-2.3888888,2.425926] units: 1.000e-08 unique values: 20 missing .: 5/36 mean: -.112903 std. dev: 1.32006 percentiles: 10% 25% 50% 75% 90% -1.64815 -.907407 -.537037 .944444 1.5 -------------------------------------------------------------------------------------------------- ZCOWAT COWAT Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-2.2580645,1.6489363] units: 1.000e-09 unique values: 21 missing .: 5/36 mean: -.132508 std. dev: 1.31866 percentiles: 10% 25% 50% 75% 90% -1.93548 -1.1828 -.053191 1.1828 1.6129 -------------------------------------------------------------------------------------------------- vfef_Zcombo Verbal fluency EF Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-2.1084228,1.8730586] units: 1.000e-08 unique values: 30 missing .: 5/36 mean: -.122706 std. dev: 1.19595 percentiles: 10% 25% 50% 75% 90% -1.63949 -.91368 -.355137 1.21296 1.4101 -------------------------------------------------------------------------------------------------- ZDETlmn Detection task Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-2.5853348,1.2046071] units: 1.000e-08 unique values: 31 missing .: 5/36 mean: -.507663 std. dev: 1.22991 percentiles: 10% 25% 50% 75% 90% -2.11996 -1.87495 -.200257 .508376 .895576 -------------------------------------------------------------------------------------------------- ZIDNlmn Identification task Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-3.3799198,.91043085] units: 1.000e-09 unique values: 31 missing .: 5/36 mean: -.849087 std. dev: 1.08335 percentiles: 10% 25% 50% 75% 90% -2.21651 -1.54752 -.785652 -.183368 .497961 -------------------------------------------------------------------------------------------------- ZONBacc One-back accuracy task Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-1.79895,1.9282358] units: 1.000e-08 unique values: 23 missing .: 5/36 mean: .468795 std. dev: .994472 percentiles: 10% 25% 50% 75% 90% -.617369 -.138803 .35778 1.29413 1.49911 -------------------------------------------------------------------------------------------------- ZONBlmn One-back speed task Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-3.0386412,1.4056131] units: 1.000e-09 unique values: 31 missing .: 5/36 mean: -.361951 std. dev: .972826 percentiles: 10% 25% 50% 75% 90% -1.45568 -.893003 -.529189 .400839 .697699 -------------------------------------------------------------------------------------------------- ZOCLacc One card learning task Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-2.9642398,-.77595836] units: 1.000e-08 unique values: 10 missing .: 24/36 mean: -1.88748 std. dev: .617359 percentiles: 10% 25% 50% 75% 90% -2.83024 -2.25402 -1.7769 -1.54054 -1.47146 -------------------------------------------------------------------------------------------------- ZGMLter Maze learning Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-1.0587766,1.6451241] units: 1.000e-10 unique values: 27 missing .: 4/36 mean: .425521 std. dev: .733006 percentiles: 10% 25% 50% 75% 90% -.704167 -.006272 .492913 1.06888 1.29051 -------------------------------------------------------------------------------------------------- ZGMRter Maze recall Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-2.70101,1.562963] units: 1.000e-09 unique values: 22 missing .: 4/36 mean: .238363 std. dev: .861463 percentiles: 10% 25% 50% 75% 90% -.428283 -.163693 .272727 .889562 1.05791 -------------------------------------------------------------------------------------------------- ZISLcor List learning Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-2.6727152,2.9189031] units: 1.000e-09 unique values: 28 missing .: 5/36 mean: .186789 std. dev: 1.67094 percentiles: 10% 25% 50% 75% 90% -2.19279 -1.50554 .218138 1.81279 2.52235 -------------------------------------------------------------------------------------------------- ZISRLcor List recall Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-2.4728916,2.3249943] units: 1.000e-09 unique values: 26 missing .: 5/36 mean: .015741 std. dev: 1.16987 percentiles: 10% 25% 50% 75% 90% -1.32961 -.886405 0 .886405 1.56621 -------------------------------------------------------------------------------------------------- speed_Zcombo SIP Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-2.8604846,.82977498] units: 1.000e-08 unique values: 31 missing .: 5/36 mean: -.678375 std. dev: 1.04001 percentiles: 10% 25% 50% 75% 90% -2.04459 -1.41769 -.441224 .156456 .638641 -------------------------------------------------------------------------------------------------- attwm_Zcombo Working memory Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-3.0386412,1.4056131] units: 1.000e-09 unique values: 31 missing .: 5/36 mean: -.636112 std. dev: 1.04005 percentiles: 10% 25% 50% 75% 90% -1.64739 -1.35143 -.843984 .391591 .697699 -------------------------------------------------------------------------------------------------- maze_Zcombo Executive function and visual memory Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-1.7496942,1.5198684] units: 1.000e-08 unique values: 32 missing .: 4/36 mean: .331942 std. dev: .742026 percentiles: 10% 25% 50% 75% 90% -.496528 -.071063 .381073 .990304 1.08556 -------------------------------------------------------------------------------------------------- list_Zcombo Verbal learning and recall Z score -------------------------------------------------------------------------------------------------- type: numeric (float) range: [-2.5728035,2.2788582] units: 1.000e-09 unique values: 30 missing .: 5/36 mean: .101265 std. dev: 1.33722 percentiles: 10% 25% 50% 75% 90% -1.75343 -.779961 .047193 1.45945 1.90265 -------------------------------------------------------------------------------------------------- edu_years Education group -------------------------------------------------------------------------------------------------- type: numeric (byte) label: edu range: [13,19] units: 1 unique values: 3 missing .: 4/36 tabulation: Freq. Numeric Label 6 13 Secondary 13 17 Univ. 13 19 Postgrad 4 . -------------------------------------------------------------------------------------------------- hibp_bl PMH of hypertension -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,1] units: 1 unique values: 2 missing .: 2/36 tabulation: Freq. Value 33 0 1 1 2 . -------------------------------------------------------------------------------------------------- diabetes PMH of diabetes -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,1] units: 1 unique values: 2 missing .: 2/36 tabulation: Freq. Value 33 0 1 1 2 . -------------------------------------------------------------------------------------------------- hyperchol PMH of hypercholesterolaemia -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,1] units: 1 unique values: 2 missing .: 2/36 tabulation: Freq. Value 33 0 1 1 2 . -------------------------------------------------------------------------------------------------- myoc_infarct PMH of myocardial infarct -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,0] units: 1 unique values: 1 missing .: 2/36 tabulation: Freq. Value 34 0 2 . -------------------------------------------------------------------------------------------------- angina PMH of angina -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,1] units: 1 unique values: 2 missing .: 2/36 unique mv codes: 2 missing .*: 1/36 tabulation: Freq. Value 31 0 2 1 2 . 1 .a -------------------------------------------------------------------------------------------------- countryschool Country of schooling -------------------------------------------------------------------------------------------------- type: string (str19) unique values: 18 missing "": 2/36 examples: "Brazil, UK" "Not stated" "UK" "UK" warning: variable has embedded blanks -------------------------------------------------------------------------------------------------- firstlang language -------------------------------------------------------------------------------------------------- type: string (str18) unique values: 12 missing "": 2/36 examples: "English" "English" "English" "Polish" warning: variable has embedded blanks -------------------------------------------------------------------------------------------------- hivstatus HIV status -------------------------------------------------------------------------------------------------- type: numeric (byte) label: posneg range: [0,1] units: 1 unique values: 2 missing .: 0/36 tabulation: Freq. Numeric Label 12 0 Negative 24 1 Positive -------------------------------------------------------------------------------------------------- blmridate Date of first MRI scan -------------------------------------------------------------------------------------------------- type: numeric daily date (int) range: [19176,19480] units: 1 or equivalently: [02jul2012,02may2013] units: days unique values: 32 missing .: 3/36 mean: 19342.2 = 15dec2012 (+ 6 hours) std. dev: 108.198 percentiles: 10% 25% 50% 75% 90% 19192 19229 19333 19444 19473 18jul2012 24aug2012 06dec2012 27mar2013 25apr2013 -------------------------------------------------------------------------------------------------- blmridone Was an MRI done? -------------------------------------------------------------------------------------------------- type: numeric (byte) label: yesno range: [0,1] units: 1 unique values: 2 missing .: 0/36 tabulation: Freq. Numeric Label 3 0 No 33 1 Yes -------------------------------------------------------------------------------------------------- blmritime Time (hrs) of first MRI -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [9,16] units: 1 unique values: 6 missing .: 3/36 tabulation: Freq. Value 4 9 1 12 6 13 5 14 6 15 11 16 3 . -------------------------------------------------------------------------------------------------- blsbp Baseline SBP -------------------------------------------------------------------------------------------------- type: numeric (float) range: [106,165] units: .1 unique values: 23 missing .: 3/36 mean: 129.864 std. dev: 13.3149 percentiles: 10% 25% 50% 75% 90% 117 122 126 138 147 -------------------------------------------------------------------------------------------------- bldbp Baseline DBP -------------------------------------------------------------------------------------------------- type: numeric (float) range: [64,106] units: .1 unique values: 26 missing .: 3/36 mean: 80.303 std. dev: 10.1056 percentiles: 10% 25% 50% 75% 90% 69 72 80 86.5 94 -------------------------------------------------------------------------------------------------- blcd4 Baseline CD4 count -------------------------------------------------------------------------------------------------- type: numeric (int) range: [250,1130] units: 10 unique values: 20 missing .: 12/36 mean: 626.667 std. dev: 218.466 percentiles: 10% 25% 50% 75% 90% 400 465 585 815 830 -------------------------------------------------------------------------------------------------- blcd4p Baseline CD4 % -------------------------------------------------------------------------------------------------- type: numeric (double) range: [13.5,49.3] units: .1 unique values: 22 missing .: 12/36 mean: 26.7292 std. dev: 9.05838 percentiles: 10% 25% 50% 75% 90% 16.6 20.35 26.4 30.25 40.1 -------------------------------------------------------------------------------------------------- blcd4date Date of baseline CD4 -------------------------------------------------------------------------------------------------- type: numeric daily date (int) range: [19065,19478] units: 1 or equivalently: [13mar2012,30apr2013] units: days unique values: 21 missing .: 12/36 mean: 19335.7 = 08dec2012 (+ 17 hours) std. dev: 114.974 percentiles: 10% 25% 50% 75% 90% 19156 19269 19379.5 19417 19435 12jun2012 03oct2012 21jan2013 28feb2013 18mar2013 -------------------------------------------------------------------------------------------------- blvl Baseline VL -------------------------------------------------------------------------------------------------- type: numeric (long) range: [270,660000] units: 10 unique values: 22 missing .: 12/36 mean: 91435.4 std. dev: 145935 percentiles: 10% 25% 50% 75% 90% 510 6800 27000 155000 210000 -------------------------------------------------------------------------------------------------- blvldate Date of baseline VL -------------------------------------------------------------------------------------------------- type: numeric daily date (int) range: [18816,19439] units: 1 or equivalently: [08jul2011,22mar2013] units: days unique values: 24 missing .: 12/36 mean: 19267.5 = 01oct2012 (+ 12 hours) std. dev: 147.643 percentiles: 10% 25% 50% 75% 90% 19065 19239 19275.5 19375.5 19417 13mar2012 03sep2012 09oct2012 17jan2013 28feb2013 -------------------------------------------------------------------------------------------------- glucose Random blood glucose -------------------------------------------------------------------------------------------------- type: numeric (double) range: [3.7,6.2] units: .1 unique values: 14 missing .: 14/36 mean: 4.83182 std. dev: .640228 percentiles: 10% 25% 50% 75% 90% 4.1 4.4 4.7 5 5.7 -------------------------------------------------------------------------------------------------- glucdate Date of last glucose -------------------------------------------------------------------------------------------------- type: numeric daily date (int) range: [18514,19491] units: 1 or equivalently: [09sep2010,13may2013] units: days unique values: 22 missing .: 14/36 mean: 19205.4 = 31jul2012 (+ 10 hours) std. dev: 250.597 percentiles: 10% 25% 50% 75% 90% 18800 19177 19273 19360 19439 22jun2011 03jul2012 07oct2012 02jan2013 22mar2013 -------------------------------------------------------------------------------------------------- tchol Random total cholesterol -------------------------------------------------------------------------------------------------- type: numeric (double) range: [3.3,5.7] units: .1 unique values: 15 missing .: 18/36 mean: 4.46667 std. dev: .703771 percentiles: 10% 25% 50% 75% 90% 3.4 4 4.45 5 5.3 -------------------------------------------------------------------------------------------------- lipidsdate Date of last lipids -------------------------------------------------------------------------------------------------- type: numeric daily date (int) range: [17447,19444] units: 1 or equivalently: [08oct2007,27mar2013] units: days unique values: 18 missing .: 18/36 mean: 19026.3 = 03feb2012 (+ 7 hours) std. dev: 502.118 percentiles: 10% 25% 50% 75% 90% 18431 18766 19252.5 19360 19439 18jun2010 19may2011 16sep2012 02jan2013 22mar2013 -------------------------------------------------------------------------------------------------- trig Random triglycerides -------------------------------------------------------------------------------------------------- type: numeric (double) range: [.7,3.1] units: .1 unique values: 15 missing .: 18/36 mean: 1.65 std. dev: .752447 percentiles: 10% 25% 50% 75% 90% .7 1.1 1.45 2.3 2.7 -------------------------------------------------------------------------------------------------- hdl Random HDL -------------------------------------------------------------------------------------------------- type: numeric (double) range: [.7,1.6] units: .1 unique values: 9 missing .: 18/36 tabulation: Freq. Value 2 .7 1 .8 2 .9 1 1 1 1.1 5 1.2 3 1.3 2 1.4 1 1.6 18 . -------------------------------------------------------------------------------------------------- ldl Random LDL -------------------------------------------------------------------------------------------------- type: numeric (double) range: [.5,3.3] units: .1 unique values: 13 missing .: 18/36 mean: 2.52222 std. dev: .783323 percentiles: 10% 25% 50% 75% 90% 1.4 2 2.6 3.2 3.3 -------------------------------------------------------------------------------------------------- age Age at baseline -------------------------------------------------------------------------------------------------- type: numeric (float) range: [23.4,64.4] units: .1 unique values: 33 missing .: 0/36 mean: 39.6972 std. dev: 9.69608 percentiles: 10% 25% 50% 75% 90% 28.9 33.25 37.1 47.35 53.2 -------------------------------------------------------------------------------------------------- bllogvl Baseline log10 VL -------------------------------------------------------------------------------------------------- type: numeric (float) range: [2.4313638,5.8195438] units: 1.000e-07 unique values: 22 missing .: 12/36 mean: 4.33336 std. dev: .957138 percentiles: 10% 25% 50% 75% 90% 2.70757 3.79525 4.43017 5.17121 5.32222 -------------------------------------------------------------------------------------------------- hivdiagyears Years since HIV diagnosis -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.15879534,15.394935] units: 1.000e-08 unique values: 24 missing .: 12/36 mean: 3.56605 std. dev: 3.57963 percentiles: 10% 25% 50% 75% 90% .396988 1.37988 2.33676 4.43258 7.73443 -------------------------------------------------------------------------------------------------- infectyears Years since HIV infection (if known) -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.32854208,16.56126] units: 1.000e-08 unique values: 15 missing .: 21/36 mean: 3.53201 std. dev: 4.05818 percentiles: 10% 25% 50% 75% 90% .479124 1.28953 2.0616 4.51198 6.85558 -------------------------------------------------------------------------------------------------- syphcode Syphilis category -------------------------------------------------------------------------------------------------- type: numeric (byte) label: syph range: [0,99] units: 1 unique values: 4 missing .: 0/36 tabulation: Freq. Numeric Label 28 0 Never had syphilis 6 1 Previous syphilis 1 2 Acute syphilis during study 1 99 NK -------------------------------------------------------------------------------------------------- syphyear Year of syphilis diagnosis -------------------------------------------------------------------------------------------------- type: numeric (int) range: [2006,2013] units: 1 unique values: 5 missing .: 30/36 tabulation: Freq. Value 1 2006 1 2007 1 2008 2 2012 1 2013 30 . -------------------------------------------------------------------------------------------------- hcvcode HCV category -------------------------------------------------------------------------------------------------- type: numeric (byte) label: hcv range: [0,99] units: 1 unique values: 4 missing .: 0/36 tabulation: Freq. Numeric Label 25 0 HCV negative 1 1 Chronic HCV 1 2 Acute HCV during study 9 99 NK -------------------------------------------------------------------------------------------------- blmritext Baseline MRI report -------------------------------------------------------------------------------------------------- type: string (str87) unique values: 12 missing "": 0/36 examples: "Mild diffuse T2 hyperintense in bilateral white matter, esp deep parietal white matter" "No abnormal findings" "No abnormal findings" "normal intracranial appearances" warning: variable has embedded blanks -------------------------------------------------------------------------------------------------- blmricode Baseline MRI findings category -------------------------------------------------------------------------------------------------- type: numeric (byte) label: mri range: [0,99] units: 1 unique values: 6 missing .: 0/36 tabulation: Freq. Numeric Label 24 0 Normal 1 1 Small WM foci 4 2 Diffuse WM signal 3 3 Volume loss 1 4 Infarct 3 99 Not done -------------------------------------------------------------------------------------------------- ethcat Ethnic group -------------------------------------------------------------------------------------------------- type: numeric (byte) label: ethnic range: [0,3] units: 1 unique values: 4 missing .: 0/36 tabulation: Freq. Numeric Label 12 0 White Brit 21 1 White Other 2 2 Indian 1 3 Black -------------------------------------------------------------------------------------------------- meanCBFLCN_rreg CBFLCN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [12.398,64.322] units: .001 unique values: 33 missing .: 3/36 mean: 45.6832 std. dev: 12.3159 percentiles: 10% 25% 50% 75% 90% 29.606 40.082 45.962 55.182 57.565 -------------------------------------------------------------------------------------------------- sliceLCN_rreg CBFLCN slice -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [1,5] units: 1 unique values: 5 missing .: 3/36 tabulation: Freq. Value 1 1 8 2 7 3 14 4 3 5 3 . -------------------------------------------------------------------------------------------------- meanCBFLLN_rreg CBFLLN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [29.258,77.818] units: .001 unique values: 33 missing .: 3/36 mean: 56.5505 std. dev: 12.3891 percentiles: 10% 25% 50% 75% 90% 39.993 48.412 58.602 66.519 69.04 -------------------------------------------------------------------------------------------------- sliceLLN_rreg CBFLLN slice -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [1,5] units: 1 unique values: 5 missing .: 3/36 tabulation: Freq. Value 6 1 7 2 13 3 6 4 1 5 3 . -------------------------------------------------------------------------------------------------- meanCBFRCN_rreg CBFRCN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [29.118,95.582] units: .001 unique values: 33 missing .: 3/36 mean: 44.6706 std. dev: 12.5182 percentiles: 10% 25% 50% 75% 90% 32.314 36.523 43.048 49.608 56.691 -------------------------------------------------------------------------------------------------- sliceRCN_rreg CBFRCN slice -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [1,5] units: 1 unique values: 5 missing .: 3/36 tabulation: Freq. Value 1 1 8 2 7 3 14 4 3 5 3 . -------------------------------------------------------------------------------------------------- meanCBFRLN_rreg CBFRLN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [31.575,87.65] units: .001 unique values: 33 missing .: 3/36 mean: 52.3791 std. dev: 12.7614 percentiles: 10% 25% 50% 75% 90% 34.767 43.508 51.694 59.263 65.895 -------------------------------------------------------------------------------------------------- sliceRLN_rreg CBFRLN slice -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [1,5] units: 1 unique values: 5 missing .: 3/36 tabulation: Freq. Value 6 1 7 2 13 3 6 4 1 5 3 . -------------------------------------------------------------------------------------------------- totalarea_rreg Total area of all 4 ROI -------------------------------------------------------------------------------------------------- type: numeric (float) range: [1139.062,1898.438] units: .001 unique values: 27 missing .: 3/36 mean: 1469.74 std. dev: 151.504 percentiles: 10% 25% 50% 75% 90% 1293.75 1378.13 1490.63 1560.94 1631.25 -------------------------------------------------------------------------------------------------- meanCBFall_rreg Mean CBF across all 4 ROI -------------------------------------------------------------------------------------------------- type: numeric (float) range: [30.999207,69.011215] units: 1.000e-06 unique values: 33 missing .: 3/36 mean: 51.4282 std. dev: 10.1146 percentiles: 10% 25% 50% 75% 90% 37.6546 45.3857 51.3469 58.2541 64.5118 -------------------------------------------------------------------------------------------------- CNarea_rreg Combined area of both caudates -------------------------------------------------------------------------------------------------- type: numeric (float) range: [379.68701,576.56201] units: .00001 unique values: 18 missing .: 3/36 mean: 463.636 std. dev: 53.8345 percentiles: 10% 25% 50% 75% 90% 393.75 421.875 478.124 492.188 534.376 -------------------------------------------------------------------------------------------------- meanCBF_CN_rreg Mean CBF across both caudates -------------------------------------------------------------------------------------------------- type: numeric (float) range: [27.034702,71.097168] units: 1.000e-06 unique values: 33 missing .: 3/36 mean: 45.1341 std. dev: 10.3699 percentiles: 10% 25% 50% 75% 90% 35.0567 36.1897 44.7684 52.3107 58.4375 -------------------------------------------------------------------------------------------------- LNarea_rreg Combined area of both LN -------------------------------------------------------------------------------------------------- type: numeric (float) range: [689.062,1406.25] units: .001 unique values: 28 missing .: 3/36 mean: 1006.11 std. dev: 144.187 percentiles: 10% 25% 50% 75% 90% 815.626 900 998.438 1096.88 1153.13 -------------------------------------------------------------------------------------------------- meanCBF_LN_rreg Mean CBF across both LN -------------------------------------------------------------------------------------------------- type: numeric (float) range: [32.201164,74.357994] units: 1.000e-06 unique values: 33 missing .: 3/36 mean: 54.3717 std. dev: 11.0869 percentiles: 10% 25% 50% 75% 90% 37.9253 48.7043 53.9975 63.3734 67.7075 -------------------------------------------------------------------------------------------------- qc_cbf qc_cbf -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,6] units: 1 unique values: 7 missing .: 4/36 tabulation: Freq. Value 2 0 5 1 3 2 7 3 4 4 7 5 4 6 4 . -------------------------------------------------------------------------------------------------- qc_r1 qc_r1 -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [5,6] units: 1 unique values: 2 missing .: 4/36 tabulation: Freq. Value 2 5 30 6 4 . -------------------------------------------------------------------------------------------------- qc_abv qc_abv -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,6] units: 1 unique values: 7 missing .: 4/36 tabulation: Freq. Value 1 0 3 1 6 2 8 3 4 4 7 5 3 6 4 . -------------------------------------------------------------------------------------------------- qc_att qc_att -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,6] units: 1 unique values: 7 missing .: 4/36 tabulation: Freq. Value 3 0 3 1 4 2 14 3 5 4 2 5 1 6 4 . -------------------------------------------------------------------------------------------------- qc_total qc_total -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [7,23] units: 1 unique values: 15 missing .: 4/36 mean: 15.4375 std. dev: 4.18089 percentiles: 10% 25% 50% 75% 90% 10 12 16 18 20 -------------------------------------------------------------------------------------------------- qc_artefact qc_artefact -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [3,8] units: 1 unique values: 6 missing .: 4/36 tabulation: Freq. Value 8 3 5 4 4 5 6 6 6 7 3 8 4 . -------------------------------------------------------------------------------------------------- qc_combined qc_combined -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [10,31] units: 1 unique values: 18 missing .: 4/36 mean: 20.6563 std. dev: 5.47492 percentiles: 10% 25% 50% 75% 90% 13 16 21.5 25 27 -------------------------------------------------------------------------------------------------- meanATT1LCN ATT1LCN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.104,.521] units: .001 unique values: 30 missing .: 4/36 mean: .293719 std. dev: .099121 percentiles: 10% 25% 50% 75% 90% .181 .2285 .276 .375 .439 -------------------------------------------------------------------------------------------------- meanATT1LLN ATT1LLN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.037,.43] units: .001 unique values: 31 missing .: 4/36 mean: .186188 std. dev: .088823 percentiles: 10% 25% 50% 75% 90% .07 .1125 .187 .2385 .258 -------------------------------------------------------------------------------------------------- meanATT1RCN ATT1RCN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.024,.493] units: .001 unique values: 30 missing .: 4/36 mean: .284656 std. dev: .094526 percentiles: 10% 25% 50% 75% 90% .183 .2315 .283 .3465 .391 -------------------------------------------------------------------------------------------------- meanATT1RLN ATT1RLN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.003,.382] units: .001 unique values: 32 missing .: 4/36 mean: .182375 std. dev: .085584 percentiles: 10% 25% 50% 75% 90% .068 .1235 .184 .231 .291 -------------------------------------------------------------------------------------------------- areaLCN ATT2LCN area -------------------------------------------------------------------------------------------------- type: numeric (float) range: [182.812,281.25] units: .001 unique values: 8 missing .: 3/36 tabulation: Freq. Value 5 182.812 4 196.875 6 210.938 5 225 7 239.062 3 253.125 2 267.18799 1 281.25 3 . -------------------------------------------------------------------------------------------------- meanATT2LCN ATT2LCN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.408,1.017] units: .001 unique values: 32 missing .: 3/36 mean: .704061 std. dev: .151175 percentiles: 10% 25% 50% 75% 90% .534 .593 .693 .832 .898 -------------------------------------------------------------------------------------------------- areaLLN ATT2LLN area -------------------------------------------------------------------------------------------------- type: numeric (float) range: [295.312,632.812] units: .001 unique values: 15 missing .: 3/36 mean: 503.693 std. dev: 80.5112 percentiles: 10% 25% 50% 75% 90% 421.875 450 506.25 576.562 604.688 -------------------------------------------------------------------------------------------------- meanATT2LLN ATT2LLN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.325,.954] units: .001 unique values: 33 missing .: 3/36 mean: .563727 std. dev: .137754 percentiles: 10% 25% 50% 75% 90% .399 .47 .545 .637 .742 -------------------------------------------------------------------------------------------------- areaRCN ATT2RCN area -------------------------------------------------------------------------------------------------- type: numeric (float) range: [168.75,351.562] units: .001 unique values: 11 missing .: 3/36 mean: 241.193 std. dev: 40.103 percentiles: 10% 25% 50% 75% 90% 196.875 210.938 239.062 267.188 281.25 -------------------------------------------------------------------------------------------------- meanATT2RCN ATT2RCN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.194,1.041] units: .001 unique values: 32 missing .: 3/36 mean: .690333 std. dev: .162825 percentiles: 10% 25% 50% 75% 90% .539 .583 .686 .805 .903 -------------------------------------------------------------------------------------------------- areaRLN ATT2RLN area -------------------------------------------------------------------------------------------------- type: numeric (float) range: [365.625,829.688] units: .001 unique values: 15 missing .: 3/36 mean: 502.415 std. dev: 85.4864 percentiles: 10% 25% 50% 75% 90% 393.75 450 506.25 548.438 576.562 -------------------------------------------------------------------------------------------------- meanATT2RLN ATT2RLN mean -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.164,.811] units: .001 unique values: 33 missing .: 3/36 mean: .535697 std. dev: .145747 percentiles: 10% 25% 50% 75% 90% .367 .444 .551 .628 .696 -------------------------------------------------------------------------------------------------- meanMVTTLCN (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.227,.56299996] units: 1.000e-08 unique values: 32 missing .: 4/36 mean: .405687 std. dev: .083803 percentiles: 10% 25% 50% 75% 90% .318 .3455 .3855 .474 .533 -------------------------------------------------------------------------------------------------- meanMVTTRCN (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.17,.59600002] units: 1.000e-08 unique values: 31 missing .: 4/36 mean: .405937 std. dev: .103126 percentiles: 10% 25% 50% 75% 90% .279 .334 .409 .4915 .529 -------------------------------------------------------------------------------------------------- meanMVTTLLN (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.25699997,.52399999] units: 1.000e-08 unique values: 31 missing .: 4/36 mean: .377469 std. dev: .072405 percentiles: 10% 25% 50% 75% 90% .296 .3305 .3675 .42 .474 -------------------------------------------------------------------------------------------------- meanMVTTRLN (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.161,.49900001] units: 1.000e-08 unique values: 32 missing .: 4/36 mean: .352844 std. dev: .072779 percentiles: 10% 25% 50% 75% 90% .278 .302 .367 .4 .422 -------------------------------------------------------------------------------------------------- totalarea Total area of all 4 ROI -------------------------------------------------------------------------------------------------- type: numeric (float) range: [1139.062,1898.438] units: .001 unique values: 27 missing .: 3/36 mean: 1469.74 std. dev: 151.504 percentiles: 10% 25% 50% 75% 90% 1293.75 1378.13 1490.63 1560.94 1631.25 -------------------------------------------------------------------------------------------------- meanATT1all Mean ATT1 across all 4 ROI -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.07350002,.37445298] units: 1.000e-08 unique values: 32 missing .: 4/36 mean: .216726 std. dev: .08002 percentiles: 10% 25% 50% 75% 90% .10155 .176592 .2093 .267074 .321046 -------------------------------------------------------------------------------------------------- meanATT2all Mean ATT2 across all 4 ROI -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.28474721,.88521045] units: 1.000e-08 unique values: 33 missing .: 3/36 mean: .59716 std. dev: .132723 percentiles: 10% 25% 50% 75% 90% .462982 .511106 .594514 .680252 .775435 -------------------------------------------------------------------------------------------------- meanMVTTall Mean MVTT across all 4 ROI -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.20774724,.51415789] units: 1.000e-08 unique values: 32 missing .: 4/36 mean: .379803 std. dev: .063297 percentiles: 10% 25% 50% 75% 90% .309622 .34405 .378847 .419018 .454389 -------------------------------------------------------------------------------------------------- CNarea Combined area of both caudates -------------------------------------------------------------------------------------------------- type: numeric (float) range: [379.68701,576.56201] units: .00001 unique values: 18 missing .: 3/36 mean: 463.636 std. dev: 53.8345 percentiles: 10% 25% 50% 75% 90% 393.75 421.875 478.124 492.188 534.376 -------------------------------------------------------------------------------------------------- meanATT1_CN Mean ATT1 across both caudates -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.10025706,.50793332] units: 1.000e-09 unique values: 32 missing .: 4/36 mean: .28906 std. dev: .09158 percentiles: 10% 25% 50% 75% 90% .202741 .220373 .286402 .347152 .389 -------------------------------------------------------------------------------------------------- meanATT2_CN Mean ATT2 across both caudates -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.29794273,1.0289999] units: 1.000e-08 unique values: 33 missing .: 3/36 mean: .696597 std. dev: .149704 percentiles: 10% 25% 50% 75% 90% .562382 .605536 .6645 .813719 .886586 -------------------------------------------------------------------------------------------------- meanMVTT_CN Mean MVTT across both caudates -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.19768567,.57049996] units: 1.000e-08 unique values: 32 missing .: 4/36 mean: .405321 std. dev: .087191 percentiles: 10% 25% 50% 75% 90% .320794 .338885 .383631 .488109 .525714 -------------------------------------------------------------------------------------------------- LNarea Combined area of both LN -------------------------------------------------------------------------------------------------- type: numeric (float) range: [689.062,1406.25] units: .001 unique values: 28 missing .: 3/36 mean: 1006.11 std. dev: 144.187 percentiles: 10% 25% 50% 75% 90% 815.626 900 998.438 1096.88 1153.13 -------------------------------------------------------------------------------------------------- meanATT1_LN Mean ATT1 across both LN -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.04538095,.3781552] units: 1.000e-09 unique values: 32 missing .: 4/36 mean: .184271 std. dev: .084516 percentiles: 10% 25% 50% 75% 90% .069024 .127682 .182257 .23911 .266488 -------------------------------------------------------------------------------------------------- meanATT2_LN Mean ATT2 across both LN -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.27649999,.87756902] units: 1.000e-08 unique values: 33 missing .: 3/36 mean: .550947 std. dev: .136572 percentiles: 10% 25% 50% 75% 90% .386619 .462316 .558105 .62514 .719171 -------------------------------------------------------------------------------------------------- meanMVTT_LN Mean MVTT across both LN -------------------------------------------------------------------------------------------------- type: numeric (float) range: [.21403572,.49941379] units: 1.000e-08 unique values: 32 missing .: 4/36 mean: .366452 std. dev: .062808 percentiles: 10% 25% 50% 75% 90% .287292 .311553 .372856 .408321 .452683 -------------------------------------------------------------------------------------------------- any_cvd (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,1] units: 1 unique values: 2 missing .: 0/36 tabulation: Freq. Value 30 0 6 1 -------------------------------------------------------------------------------------------------- lastsmoke Last smoked -------------------------------------------------------------------------------------------------- type: numeric (byte) label: lastsmoke range: [0,4] units: 1 unique values: 5 missing .: 2/36 tabulation: Freq. Numeric Label 13 0 Never 5 1 >2 weeks 9 2 24hr - 2wk 5 3 4hr - 24hr 2 4 <4 hr 2 . -------------------------------------------------------------------------------------------------- smoker Smoking status -------------------------------------------------------------------------------------------------- type: numeric (byte) label: smoker range: [0,3] units: 1 unique values: 4 missing .: 2/36 tabulation: Freq. Numeric Label 13 0 Non-smoker 5 1 Ex-smoker 11 2 Light smoker (1-10) 5 3 Heavy smoker 10+ 2 . -------------------------------------------------------------------------------------------------- smokingyears Years as a smoker -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,42] units: 1 unique values: 19 missing .: 0/36 mean: 12.5 std. dev: 12.9956 percentiles: 10% 25% 50% 75% 90% 0 0 11 18 36 -------------------------------------------------------------------------------------------------- alc_cage CAGE questionnaire score -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,1] units: 1 unique values: 2 missing .: 2/36 tabulation: Freq. Value 25 0 9 1 2 . -------------------------------------------------------------------------------------------------- lastalc (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (byte) label: lastalc range: [0,3] units: 1 unique values: 4 missing .: 2/36 tabulation: Freq. Numeric Label 2 0 Never 17 1 >72 hours 14 2 12-72 hours 1 3 <12 hours 2 . -------------------------------------------------------------------------------------------------- alc_units (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (float) range: [0,75.075] units: .001 unique values: 19 missing .: 0/36 mean: 12.1924 std. dev: 15.8952 percentiles: 10% 25% 50% 75% 90% 0 1.125 10 15 25.5 -------------------------------------------------------------------------------------------------- lastcaf (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (byte) label: lastalc range: [1,3] units: 1 unique values: 3 missing .: 2/36 tabulation: Freq. Numeric Label 4 1 >72 hours 16 2 12-72 hours 14 3 <12 hours 2 . -------------------------------------------------------------------------------------------------- caffnum Caffeine/week (equiv. cups coffee) -------------------------------------------------------------------------------------------------- type: numeric (float) range: [0,105] units: .01 unique values: 29 missing .: 0/36 mean: 13.7639 std. dev: 18.5939 percentiles: 10% 25% 50% 75% 90% .75 2.875 8.75 17.5 24.5 -------------------------------------------------------------------------------------------------- caffamt Caffeine/week (est. milligrams) -------------------------------------------------------------------------------------------------- type: numeric (int) range: [0,19600] units: 1 unique values: 31 missing .: 0/36 mean: 2610.97 std. dev: 3505.62 percentiles: 10% 25% 50% 75% 90% 125 480 1750 3500 4200 -------------------------------------------------------------------------------------------------- lastdrugs (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (byte) label: lastdrugs range: [0,2] units: 1 unique values: 3 missing .: 2/36 tabulation: Freq. Numeric Label 10 0 Never 22 1 >72 hours 2 2 <72 hours 2 . -------------------------------------------------------------------------------------------------- ivdu (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (byte) label: ivdu range: [0,2] units: 1 unique values: 3 missing .: 0/36 tabulation: Freq. Numeric Label 31 0 Never 3 1 Previous 2 2 Past 3 months -------------------------------------------------------------------------------------------------- stim_drugs Any stimulate used in past 3 months -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,1] units: 1 unique values: 2 missing .: 0/36 tabulation: Freq. Value 25 0 11 1 -------------------------------------------------------------------------------------------------- degree (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,1] units: 1 unique values: 2 missing .: 0/36 tabulation: Freq. Value 7 0 29 1 -------------------------------------------------------------------------------------------------- postgrad (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,1] units: 1 unique values: 2 missing .: 0/36 tabulation: Freq. Value 21 0 15 1 -------------------------------------------------------------------------------------------------- manageprof (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (byte) range: [0,1] units: 1 unique values: 2 missing .: 2/36 tabulation: Freq. Value 11 0 23 1 2 . -------------------------------------------------------------------------------------------------- employment (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (byte) label: employment, but 1 nonmissing value is not labeled range: [0,9] units: 1 unique values: 7 missing .: 0/36 tabulation: Freq. Numeric Label 2 0 25 1 Full time 4 2 Part time 2 3 Unemployed 1 7 Retired 1 8 Student 1 9 Other -------------------------------------------------------------------------------------------------- base_needs (unlabeled) -------------------------------------------------------------------------------------------------- type: numeric (byte) label: basic range: [1,99] units: 1 unique values: 5 missing .: 0/36 tabulation: Freq. Numeric Label 25 1 Always covered 3 2 Mostly covered 4 3 Sometimes covered 2 4 Not covered 2 99 NK . label list basic: 1 Always covered 2 Mostly covered 3 Sometimes covered 4 Not covered 99 NK employment: 1 Full time 2 Part time 3 Unemployed 4 Longterm sick 5 Shortterm sick 6 Home maker 7 Retired 8 Student 9 Other ivdu: 0 Never 1 Previous 2 Past 3 months lastdrugs: 0 Never 1 >72 hours 2 <72 hours lastalc: 0 Never 1 >72 hours 2 12-72 hours 3 <12 hours smoker: 0 Non-smoker 1 Ex-smoker 2 Light smoker (1-10) 3 Heavy smoker 10+ lastsmoke: 0 Never 1 >2 weeks 2 24hr - 2wk 3 4hr - 24hr 4 <4 hr posneg: 0 Negative 1 Positive yesno: 0 No 1 Yes 98 NA 99 NK syph: 0 Never had syphilis 1 Previous syphilis 2 Acute syphilis during study 99 NK hcv: 0 HCV negative 1 Chronic HCV 2 Acute HCV during study 99 NK ethnic: 0 White Brit 1 White Other 2 Indian 3 Black mri: 0 Normal 1 Small WM foci 2 Diffuse WM signal 3 Volume loss 4 Infarct 99 Not done edu: 9 No quals 11 Basic 13 Secondary 15 Further edu 17 Univ. 19 Postgrad 99 Education-NK .