Browse by UCL people
Group by: Type | Date
Number of items: 58.
2026
Gibbs, Jo;
Stirrup, Oliver;
Tostevin, Anna;
Howarth, Alison;
Dewsnap, Claire;
Ross, Jonathan DC;
Williams, Andy;
... Burns, Fiona; + view all
(2026)
Sexually transmitted infection testing and key outcomes following implementation of online postal self-sampling into sexual health services in England: a retrospective observational study of routinely collected service-level healthcare data.
The Lancet Regional Health - Europe
, 61
, Article 101541. 10.1016/j.lanepe.2025.101541.
(In press).
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Lancaster, Tara;
Tut, Gokhan;
Sylla, Panagiota;
Bone, David;
Bentley, Christopher;
Spalkova, Eliska;
Jadir, Azar;
... Moss, Paul; + view all
(2026)
Endemic penetrance of SARS-CoV-2 has impacted marginally on immunity to spike protein of human coronaviruses.
Communications Biology
10.1038/s42003-025-09474-x.
(In press).
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2025
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Dunn, David T;
Stirrup, Oliver T;
Glidden, David V;
(2025)
Sample size estimation for the averted events ratio.
Clinical Trials
10.1177/17407745251377435.
(In press).
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Howarth, A;
Harb, A;
Mohammed, H;
Burns, F;
Estcourt, C;
Bloch, SCM;
Copas, A;
... Gibbs, J; + view all
(2025)
Uptake, positivity, and equity of online postal self-sampling for chlamydia testing in England: a retrospective cohort study.
The Lancet Regional Health - Europe
, 56
, Article 101412. 10.1016/j.lanepe.2025.101412.
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Leiser, Ruth;
McLeod, Julie;
Mapp, Fiona;
Stirrup, Oliver;
Blackstone, James;
Illingworth, Christopher JR;
Nebbia, Gaia;
... Flowers, Paul; + view all
(2025)
Insights into the implementation of a whole genome sequencing report form (SRF) to reduce nosocomial SARS-CoV-2 in UK hospitals within an unfolding pandemic: A qualitative process evaluation using normalisation process theory.
PLoS ONE
, 20
(4)
, Article e0321534. 10.1371/journal.pone.0321534.
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Stirrup, Oliver;
Blackstone, James;
Cullen-Stephenson, Iona;
Fenner, Robert;
Adams, Natalie;
Leiser, Ruth;
Krutikov, Maria;
... Shallcross, Laura; + view all
(2025)
VIVALDI-CT shaping care home COVID-19 testing policy: A pragmatic cluster randomised controlled trial of asymptomatic testing compared to standard care in care home staff.
PLoS One
, 20
(7)
, Article e0324908. 10.1371/journal.pone.0324908.
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2024
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Estcourt, Claudia S;
Mapp, Fiona;
Woode Owusu, Melvina;
Low, Nicola;
Flowers, Paul;
Copas, Andrew;
Roberts, Tracy E;
... Cassell, Jackie A; + view all
(2024)
Improving sexual health through partner notification: the LUSTRUM mixed-methods research Programme including RCT of accelerated partner therapy.
Programme Grants for Applied Research
, 12
(2)
pp. 1-96.
10.3310/trqw3886.
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Stirrup, Oliver;
Krutikov, Maria;
Azmi, Borscha;
Monakhov, Igor;
Hayward, Andrew;
Copas, Andrew;
Shallcross, Laura;
(2024)
COVID-19 related mortality and hospital admissions in the VIVALDI study cohort: October 2020-March 2023.
Journal of Hospital Infection
, 143
pp. 105-112.
10.1016/j.jhin.2023.10.021.
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2023
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Adams, Natalie;
Stirrup, Oliver;
Blackstone, James;
Krutikov, Maria;
Cassell, Jackie A;
Cadar, Dorina;
Henderson, Catherine;
... Shallcross, Laura; + view all
(2023)
Shaping care home COVID-19 testing policy: a protocol for a pragmatic cluster randomised controlled trial of asymptomatic testing compared with standard care in care home staff (VIVALDI-CT).
BMJ Open
, 13
(11)
, Article e076210. 10.1136/bmjopen-2023-076210.
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Albuquerque, Andreia;
Cappello, Carmelina;
Stirrup, Oliver;
Selinger, Christian P;
(2023)
Anal High-risk Human Papillomavirus Infection, Squamous Intraepithelial Lesions, and Anal Cancer in Patients with Inflammatory Bowel Disease: A Systematic Review and Meta-analysis.
Journal of Crohn's and Colitis
, 17
(8)
pp. 1228-1234.
10.1093/ecco-jcc/jjad045.
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Colton, Hayley;
Parker, Matthew D;
Stirrup, Oliver;
Blackstone, James;
Loose, Matthew;
McClure, C Patrick;
Roy, Sunando;
... de Silva, Thushan I; + view all
(2023)
Factors affecting turnaround time of SARS-CoV-2 sequencing for inpatient infection prevention and control decision making: Analysis of data from the COG-UK HOCI study.
Journal of Hospital Infection
, 131
pp. 34-42.
10.1016/j.jhin.2022.09.022.
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Dunn, David T;
Stirrup, Oliver T;
McCormack, Sheena;
Glidden, David V;
(2023)
Interpretation of active-control randomised trials: the case for a new analytical perspective involving averted events.
BMC Medical Research Methodology
, 23
, Article 149. 10.1186/s12874-023-01970-0.
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Flowers, Paul;
Leiser, Ruth;
Mapp, Fiona;
McLeod, Julie;
Stirrup, Oliver;
Illingworth, Christopher JR;
Blackstone, James;
(2023)
A qualitative process evaluation using the behaviour change wheel approach: Did a whole genome sequence report form (SRF) used to reduce nosocomial SARS-CoV-2 within UK hospitals operate as anticipated?
British Journal of Health Psychology
10.1111/bjhp.12666.
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Krutikov, Maria;
Stirrup, Oliver;
Fuller, Chris;
Adams, Natalie;
Azmi, Borscha;
Irwin-Singer, Aidan;
Sethu, Niyathi;
... Shallcross, Laura; + view all
(2023)
Built Environment and SARS-CoV-2 Transmission in Long-Term Care Facilities: Cross-Sectional Survey and Data Linkage.
Journal of the American Medical Directors Association
10.1016/j.jamda.2023.10.027.
(In press).
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Marcus, Rebecca;
C, Pike;
Gill, K;
Smith, P;
Rouhani, S;
Mendelsohn, A;
Mendel, E;
... Bekker, LG; + view all
(2023)
Acceptability, feasibility and cost of point of care testing for sexually transmitted infections among South African adolescents where syndromic management is standard of care.
BMC Health Services Research
, 23
(1)
, Article 1078. 10.1186/s12913-023-10068-8.
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Panca, Monica;
Blackstone, James;
Stirrup, Oliver;
Cutino-Moguel, Maria-Teresa;
Thomson, Emma;
Peters, Christine;
Snell, Luke B;
... Breuer, Judith; + view all
(2023)
Evaluating the cost implications of integrating SARS-CoV-2 genome sequencing for infection prevention and control investigation of nosocomial transmission within hospitals.
Journal of Hospital Infection
10.1016/j.jhin.2023.06.005.
(In press).
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Stirrup, Oliver;
Shrotri, Madhumita;
Adams, Natalie L;
Krutikov, Maria;
Azmi, Borscha;
Monakhov, Igor;
Tut, Gokhan;
... Shallcross, Laura; + view all
(2023)
Effectiveness of successive booster vaccine doses against SARS-CoV-2 related mortality in residents of long-term care facilities in the VIVALDI study.
Age Ageing
, 52
(8)
, Article afad141. 10.1093/ageing/afad141.
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Stirrup, Oliver;
Shrotri, Madhumita;
Adams, Natalie L;
Krutikov, Maria;
Nacer-Laidi, Hadjer;
Azmi, Borscha;
Palmer, Tom;
... Shallcross, Laura; + view all
(2023)
Clinical effectiveness of SARS-CoV-2 booster vaccine against Omicron infection in residents and staff of Long-Term Care Facilities: a prospective cohort study (VIVALDI).
Open Forum Infectious Diseases
, 10
(1)
, Article ofac694. 10.1093/ofid/ofac694.
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Tut, Gokhan;
Lancaster, Tara;
Krutikov, Maria;
Sylla, Panagiota;
Bone, David;
Spalkova, Eliska;
Bentley, Christopher;
... Moss, Paul; + view all
(2023)
Strong peak immunogenicity but rapid antibody waning following third vaccine dose in older residents of care homes.
Nature Aging
, 3
pp. 93-104.
10.1038/s43587-022-00328-3.
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2022
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Burns, JE;
Stirrup, O;
Waters, L;
Dunn, D;
Gilson, R;
Pett, SL;
(2022)
No overall impact on rate of weight gain with integrase inhibitor-containing regimens in antiretroviral-naïve adults.
HIV Medicine
, 23
(3)
pp. 294-300.
10.1111/hiv.13186.
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Dickin, Sarah;
Vanhuyse, Fedra;
Stirrup, Oliver;
Liera, Carla;
Copas, Andrew;
Odhiambo, Aloyce;
Palmer, Tom;
... Skordis, Jolene; + view all
(2022)
Implementation of the Afya conditional cash transfer intervention to retain women in the continuum of care: a mixed-methods process evaluation.
BMJ Open
, 12
(9)
, Article e060748. 10.1136/bmjopen-2022-060748.
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Palmer, Tom;
Batura, Neha;
Skordis, Jolene;
Stirrup, Oliver;
Vanhuyse, Fedra;
Copas, Andrew;
Odhiambo, Aloyce;
... Haghparast-Bidgoli, Hassan; + view all
(2022)
Economic evaluation of a conditional cash transfer to retain women in the continuum of care during pregnancy, birth and the postnatal period in Kenya.
PLOS Global Public Health
, 2
(3)
, Article e0000128. 10.1371/journal.pgph.0000128.
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Snell, LB;
Fisher, CL;
Taj, U;
Stirrup, O;
Merrick, B;
Alcolea-Medina, A;
Charalampous, T;
... Awan, AR; + view all
(2022)
Combined epidemiological and genomic analysis of nosocomial SARS-CoV-2 infection early in the pandemic and the role of unidentified cases in transmission.
Clinical Microbiology and Infection
, 28
(1)
pp. 93-100.
10.1016/j.cmi.2021.07.040.
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Stirrup, O;
Tostevin, A;
Ragonnet-Cronin, M;
Volz, E;
Burns, F;
Delpech, V;
Dunn, D;
(2022)
Diagnosis delays in the UK according to pre- or post-migration acquisition of HIV.
AIDS
, 36
(3)
pp. 415-422.
10.1097/qad.0000000000003110.
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Stirrup, Oliver;
Blackstone, James;
Mapp, Fiona;
MacNeil, Alyson;
Panca, Monica;
Holmes, Alison;
Machin, Nicholas;
... Breuer, Judith; + view all
(2022)
Effectiveness of rapid SARS-CoV-2 genome sequencing in supporting infection control for hospital-onset COVID-19 infection: multicenter, prospective study.
eLife
, 11
10.7554/elife.78427.
(In press).
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Stirrup, Oliver;
Krutikov, Maria;
Tut, Gokhan;
Palmer, Tom;
Bone, David;
Bruton, Rachel;
Fuller, Christopher;
... Shallcross, Laura; + view all
(2022)
SARS-CoV-2 anti-spike antibody levels following second dose of ChAdOx1 nCov-19 or BNT162b2 in residents of long-term care facilities in England (VIVALDI).
MedRxiv: Cold Spring Harbor, NY, USA.
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Tisler, Anna;
Stirrup, Oliver;
Pisarev, Heti;
Kalda, Ruth;
Meister, Tatjana;
Suija, Kadri;
Kolde, Raivo;
... Uusküla, Anneli; + view all
(2022)
Post-acute sequelae of COVID-19 among hospitalized patients in Estonia: Nationwide matched cohort study.
PLOS ONE
, 17
(11)
, Article e0278057. 10.1371/journal.pone.0278057.
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Vanhuyse, F;
Stirrup, O;
Odhiambo, A;
Palmer, T;
Dickin, S;
Skordis, J;
Batura, N;
... Copas, A; + view all
(2022)
Effectiveness of conditional cash transfers (Afya credits incentive) to retain women in the continuum of care during pregnancy, birth and the postnatal period in Kenya: a cluster-randomised trial.
BMJ Open
, 12
(1)
, Article e055921. 10.1136/bmjopen-2021-055921.
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2021
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Andreia, A;
Cappello, C;
Stirrup, O;
(2021)
High-risk human papilloma virus, precancerous lesions and cancer in anal condylomas.
AIDS
, 35
(12)
pp. 1939-1948.
10.1097/QAD.0000000000002975.
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Blackstone, J;
Stirrup, O;
Mapp, F;
Panca, M;
Copas, A;
Flowers, P;
Hockey, L;
... the COVID-19 Genomics UK (COG-UK) Consortium; + view all
(2021)
Protocol for the COG-UK hospital onset COVID-19 infection (HOCI) multicentre interventional clinical study: evaluating the efficacy of rapid genome sequencing of SARS-CoV-2 in limiting the spread of COVID-19 in United Kingdom NHS hospitals.
MedRxiv: Cold Spring Harbor, NY, USA.
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Boshier, FAT;
Venturini, C;
Stirrup, O;
Guerra-Assunção, JA;
Alcolea-Medina, A;
Becket, AH;
Byott, M;
... COG-UK HOCI Variant Substudy consortium*, The COVID-19 Genomics; + view all
(2021)
The Alpha variant was not associated with excess nosocomial SARS-CoV-2 infection in a multi-centre UK hospital study.
Journal of Infection
, 83
(6)
pp. 693-700.
10.1016/j.jinf.2021.09.022.
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Briffa, C;
Stirrup, O;
Huddy, C;
Richards, J;
Shetty, S;
Reed, K;
Khalil, A;
(2021)
Twin chorionicity-specific population birth-weight charts adjusted for estimated fetal weight.
Ultrasound in Obstetrics and Gynecology
, 58
(3)
pp. 439-449.
10.1002/uog.23606.
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Dunn, DT;
Stirrup, OT;
Glidden, DV;
(2021)
Confidence limits for the averted infections ratio estimated via the counterfactual placebo incidence rate.
Statistical Communications in Infectious Diseases
, 13
(1)
, Article 20210002. 10.1515/scid-2021-0002.
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Glidden, DV;
Das, M;
Dunn, DT;
Ebrahimi, R;
Zhao, Y;
Stirrup, OT;
Baeten, JM;
(2021)
Using the adherence-efficacy relationship of emtricitabine and tenofovir disoproxil fumarate to calculate background hiv incidence: a secondary analysis of a randomized, controlled trial.
Journal of the International AIDS Society
, 24
(5)
, Article e25744. 10.1002/jia2.25744.
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Li, KK;
Woo, YM;
Stirrup, O;
Hughes, J;
Ho, A;
Filipe, ADS;
Johnson, N;
... COVID-19 Genomics UK (COG-UK) consortium, .; + view all
(2021)
Genetic epidemiology of SARS-CoV-2 transmission in renal dialysis units - a high risk community-hospital interface.
Journal of Infection
10.1016/j.jinf.2021.04.020.
(In press).
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Stirrup, O;
Boshier, F;
Venturini, C;
Guerra-Assunção, JA;
Alcolea-Medina, A;
Beckett, A;
Charalampous, T;
... Breuer, J; + view all
(2021)
SARS-CoV-2 lineage B.1.1.7 is associated with greater disease severity among hospitalised women but not men: multicentre cohort study.
BMJ Open Respiratory Research
, 8
(1)
, Article e001029. 10.1136/bmjresp-2021-001029.
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Stirrup, O;
Hughes, J;
Parker, M;
Partridge, DG;
Shepherd, JG;
Blackstone, J;
Coll, F;
... Breuer, J; + view all
(2021)
Rapid feedback on hospital onset SARS-CoV-2 infections combining epidemiological and sequencing data.
e-Life
, 10
10.7554/eLife.65828.
(In press).
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2020
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Albuquerque, A;
Stirrup, O;
Nathan, M;
Clifford, GM;
(2020)
Burden of anal squamous cell carcinoma, squamous intraepithelial lesions and HPV16 infection in solid organ transplant recipients: A systematic review and meta-analysis.
American Journal of Transplantation
, 20
(12)
pp. 3520-3528.
10.1111/ajt.15942.
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Burns, JE;
Stirrup, OT;
Dunn, D;
Runcie-Unger, I;
Milinkovic, A;
Candfield, S;
Lukha, H;
... Pett, SL; + view all
(2020)
No overall change in the rate of weight gain after switching to an integrase-inhibitor in virologically suppressed adults with HIV.
AIDS
, 34
(1)
pp. 109-114.
10.1097/QAD.0000000000002379.
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Glidden, DV;
Stirrup, OT;
Dunn, DT;
(2020)
A Bayesian averted infection framework for PrEP trials with low numbers of HIV infections: application to the results of the DISCOVER trial.
Tha Lancet HIV
, 7
(11)
e791-e796.
10.1016/S2352-3018(20)30192-2.
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Maxwell, S;
Gafos, M;
Moncrieff, M;
Shahmanesh, M;
Stirrup, O;
(2020)
Pre-exposure prophylaxis use among men who have sex with men who have experienced problematic chemsex.
International Journal of STD & AIDS
, 31
(5)
pp. 474-480.
10.1177/0956462420906927.
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Nugent, D;
Stirrup, O;
Pett, S;
Panwar, K;
Checchi, M;
Mesher, D;
Soldan, K;
... Gilson, R; + view all
(2020)
Performance of human papillomavirus DNA detection in residual specimens taken for Chlamydia trachomatis and Neisseria gonorrhoeae nucleic acid amplification testing in men who have sex with men.
Sexually Transmitted Infections
10.1136/sextrans-2020-054702.
(In press).
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Stirrup, OT;
Asboe, D;
Pozniak, A;
Sabin, CA;
Gilson, R;
Mackie, NE;
Tostevin, A;
... UK HIV Drug Resistance Database and the UK Collaborative HIV Coh; + view all
(2020)
Continuation of emtricitabine/lamivudine within combination antiretroviral therapy following detection of the M184V/I HIV-1 resistance mutation.
HIV Medicine
10.1111/hiv.12829.
(In press).
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2019
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Albuquerque, A;
Fernandes, M;
Stirrup, O;
Teixeira, AL;
Santos, J;
Rodrigues, M;
Rios, E;
... Medeiros, R; + view all
(2019)
Expression of microRNAs 16, 20a, 150 and 155 in anal squamous intraepithelial lesions from high-risk groups.
Scientific Reports
, 9
(1)
, Article 1523. 10.1038/s41598-018-38378-6.
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Gupta, RK;
Lipman, M;
Jackson, C;
Sitch, A;
Southern, J;
Drobniewski, F;
Deeks, JJ;
... Abubakar, I; + view all
(2019)
Quantitative Interferon Gamma Release Assay and Tuberculin Skin Test Results to Predict Incident Tuberculosis: A Prospective Cohort Study.
American Journal of Respiratory and Critical Care Medicine
10.1164/rccm.201905-0969OC.
(In press).
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Long-Term Virological Suppression Working Group, .;
(2019)
Long-term virological suppression on first-line efavirenz + tenofovir + emtricitabine/lamivudine for HIV-1.
AIDS
, 33
(4)
pp. 745-751.
10.1097/QAD.0000000000002126.
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Perry, H;
Stirrup, O;
Gutierrez, J;
Vinayagam, D;
Thilaganathan, B;
Khalil, A;
(2019)
Influence of maternal characteristics and gestational age on haemodynamic indices: NICOM device-specific reference ranges.
Ultrasound in Obstetrics and Gynaecology
, 54
(5)
pp. 670-675.
10.1002/uog.20179.
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Stirrup, OT;
Sabin, CA;
Phillips, AN;
Williams, I;
Churchill, D;
Tostevin, A;
Hill, T;
... UK HIV Drug Resistance Database and the UK Collaborative HIV Coh; + view all
(2019)
Associations between baseline characteristics, CD4 cell count response and virological failure on first-line efavirenz + tenofovir + emtricitabine for HIV.
Journal of Virus Eradication
, 5
(4)
pp. 204-211.
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2018
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Albuquerque, A;
Sheaff, M;
Stirrup, O;
Cappello, C;
Bowring, J;
Cuming, T;
De Masi, A;
... Nathan, M; + view all
(2018)
Performance of Anal Cytology Compared With High-Resolution Anoscopy and Histology in Women With Lower Anogenital Tract Neoplasia.
Clinical Infectious Diseases
, 67
(8)
pp. 1262-1268.
10.1093/cid/ciy273.
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Dunn, DT;
Glidden, DV;
Stirrup, OT;
McCormack, S;
(2018)
The averted infections ratio: a novel measure of effectiveness of experimental HIV pre-exposure prophylaxis agents.
The Lancet HIV
, 5
(6)
e329-e334.
10.1016/S2352-3018(18)30045-6.
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Stirrup, OT;
Copas, AJ;
Phillips, AN;
Gill, MJ;
Geskus, RB;
Touloumi, G;
Young, J;
... CASCADE Collaboration in EuroCoord; + view all
(2018)
Predictors of CD4 cell recovery following initiation of antiretroviral therapy among HIV-1 positive patients with well-estimated dates of seroconversion.
HIV Medicine
, 19
(3)
pp. 184-194.
10.1111/hiv.12567.
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Stirrup, OT;
Dunn, DT;
(2018)
Estimation of delay to diagnosis and incidence in HIV using indirect evidence of infection dates.
BMC Medical Research Methodology
, 18
(1)
, Article 65. 10.1186/s12874-018-0522-x.
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Stirrup, OT;
Dunn, DT;
Tostevin, A;
Sabin, CA;
Pozniak, A;
Asboe, D;
Cox, A;
... UK Collaborative HIV Cohort, .; + view all
(2018)
Risk factors and outcomes for the Q151M and T69 insertion HIV-1 resistance mutations in historic UK data.
AIDS Research and Therapy
, 15
, Article 11. 10.1186/s12981-018-0198-7.
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2017
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Stirrup, OT;
Khalil, A;
D'Antonio, F;
Thilaganathan, B;
(2017)
Patterns of Second- and Third-Trimester Growth and Discordance in Twin Pregnancy: Analysis of the Southwest Thames Obstetric Research Collaborative (STORK) Multiple Pregnancy Cohort.
Fetal Diagnosis and Therapy
, 41
(2)
pp. 100-107.
10.1159/000447489.
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Vinayagam, D;
Thilaganathan, B;
Stirrup, O;
Mantovani, E;
Khalil, A;
(2017)
Maternal Hemodynamics in Normal Pregnancies: Reference ranges and the Role of Maternal Characteristics.
Ultrasound in Obstetrics & Gynecology
10.1002/uog.17504.
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2016
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Stirrup, OT;
(2016)
Extending mixed effects models for longitudinal data before and after treatment.
Doctoral thesis , UCL (University College London).
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Stirrup, OT;
Babiker, AG;
Carpenter, JR;
Copas, AJ;
(2016)
Fractional Brownian motion and multivariate-t models for longitudinal biomedical data, with application to CD4 counts in HIV-patients.
Statistics in Medicine
, 35
(9)
pp. 1514-1532.
10.1002/sim.6788.
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Stirrup, OT;
Babiker, AG;
Copas, AJ;
(2016)
Combined models for pre- and post-treatment longitudinal biomarker data: an application to CD4 counts in HIV-patients.
BMC Medical Research Methodology
, 16
, Article 121. 10.1186/s12874-016-0187-2.
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