Ryan, TA;
Bailey, A;
Fearon, P;
King, J;
(2013)
Factorial invariance of the Patient Health Questionnaire and Generalized Anxiety Disorder Questionnaire.
Br J Clin Psychol
, 52
(4)
438 - 449.
10.1111/bjc.12028.
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Abstract
The UK's Improving Access to Psychological Therapies (IAPT) programme uses the Patient Health Questionnaire Depression Scale (PHQ-9; Kroenke, Spitzer, & Williams, , J. Gen. Intern. Med., 16, 606) and Generalized Anxiety Disorder Scale (GAD-7; Spitzer et al., , Arch. Intern. Med., 166, 1092) to assess patients' symptoms of depression and anxiety respectively. Data are typically collected via telephone or face-to-face; however, no study has statistically investigated whether the questionnaires' items operate equivalently across these modes of data collection. This study aimed to address this omission.
| Type: | Article |
|---|---|
| Title: | Factorial invariance of the Patient Health Questionnaire and Generalized Anxiety Disorder Questionnaire. |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1111/bjc.12028 |
| Publisher version: | http://dx.doi.org/10.1111/bjc.12028 |
| Additional information: | © 2014 The Authors. British Journal of Clinical Psychology published by John Wiley & Sons Ltd on behalf of the British Psychological Society This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | IAPT, Confirmatory factor analysis, Factorial invariance, GAD-7, PHQ-9 |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Clinical, Edu and Hlth Psychology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1409865 |
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