Get started
Author

Gemma Clayton

Observed names: Clayton, Gemma, G Clayton, G. Clayton, Gemma L. Clayton, Gemma L Clayton, Gemma L. Clayton
Observed institutions: National Health Service, North Bristol NHS Trust, University of Liverpool, The University of Queensland, Aston University, Liverpool School of Tropical Medicine, At Bristol, Bristol Royal Infirmary, National Institute for Health and Care Research, University of Bristol, Salford Royal Hospital, NIHR Bristol Biomedical Research Centre, Mother and Infant Research Activities, MRC Integrative Epidemiology Unit, University Hospitals Bristol and Weston NHS Foundation Trust, University of Sheffield
ORCID: 0000-0002-9525-2758
Observed ORCID: 0000-0002-9525-2758
OpenAlex ID: A5026279431
Impact of blinding on estimated treatment effects in randomised clinical trials: meta-epidemiological study
2020 · Helene Moustgaard, Gemma L Clayton, et al. · BMJ · 310
PDF
Empirical Evidence of Study Design Biases in Randomized Trials: Systematic Review of Meta-Epidemiological Studies
2016 · Matthew J. Page, Julian P. T. Higgins, et al. · PLoS ONE · 298
PDF
Randomized trial of near-infrared spectroscopy for personalized optimization of cerebral tissue oxygenation during cardiac surgery
2017 · C.A. Rogers, S. Stoica, et al. · British Journal of Anaesthesia · 111
PDF
Exploring the impact of selection bias in observational studies of COVID-19: a simulation study
2022 · Louise A C Millard, Alba Fernández-Sanlés, et al. · International Journal of Epidemiology · 76
PDF
Ethnic discordance in serum anti-Müllerian hormone in healthy women: a population study from China and Europe
2019 · Scott M. Nelson, Sun Aijun, et al. · Reproductive BioMedicine Online · 48
PDF
Integrating multiple lines of evidence to assess the effects of maternal BMI on pregnancy and perinatal outcomes
2024 · Maria Carolina Borges, Gemma Clayton, et al. · BMC Medicine · 46
PDF
Ten questions to consider when interpreting results of a meta‐epidemiological study—the MetaBLIND study as a case
2019 · Helene Moustgaard, Hayley E Jones, et al. · Research Synthesis Methods · 44
Bias from questionnaire invitation and response in COVID-19 research: an example using ALSPAC
2021 · Alba Fernández-Sanlés, Daniel Smith, et al. · Wellcome Open Research · 42
PDF
Body mass index in parents and their adult offspring: A systematic review and meta‐analysis
2023 · Jie Zhang, Gemma Clayton, et al. · Obesity Reviews · 32
PDF
A framework for assessing selection and misclassification bias in mendelian randomisation studies: an illustrative example between body mass index and covid-19
2023 · Gemma L Clayton, Ana Gonçalves, et al. · BMJ · 29
PDF
Normothermic versus hypothermic cardiopulmonary bypass in low-risk paediatric heart surgery: a randomised controlled trial
2018 · Massimo Caputo, Katie Pike, et al. · Heart · 27
PDF
The impact of reproductive factors on the metabolic profile of females from menarche to menopause
2024 · Gemma L. Clayton, Maria Carolina Borges, et al. · Nature Communications · 26
PDF
Maternal hemoglobin levels and adverse pregnancy outcomes: individual patient data analysis from 2 prospective UK pregnancy cohorts
2023 · Christy A. Burden, Gordon C. Smith, et al. · American Journal of Clinical Nutrition · 26
Cardiovascular health in the menopause transition: a longitudinal study of up to 3892 women with up to four repeated measures of risk factors
2022 · Gemma L. Clayton, Ana Gonçalves Soares, et al. · BMC Medicine · 26
PDF
The INVEST project: investigating the use of evidence synthesis in the design and analysis of clinical trials
2017 · Gemma L. Clayton, Isabelle L. Smith, et al. · Trials · 22
PDF
Comparison of alternate preparative techniques on wall thickness in coronary artery bypass grafts: The HArVeST randomized controlled trial
2021 · Gianni D. Angelini, Tom Johnson, et al. · Journal of Cardiac Surgery · 21
PDF
Metabolomic Identification of a Novel, Externally Validated Predictive Test for Gestational Diabetes Mellitus
2022 · Ulla Sovio, Gemma L Clayton, et al. · The Journal of Clinical Endocrinology & Metabolism · 19
PDF
The Effect of Patient-Specific Cerebral Oxygenation Monitoring on Postoperative Cognitive Function: A Multicenter Randomized Controlled Trial
2015 · Lucy Ellis, Gavin J Murphy, et al. · JMIR Research Protocols · 18
A mixed-methods feasibility and external pilot study to inform a large pragmatic randomised controlled trial of the effects of surgical wound dressing strategies on surgical site infections (Bluebelle Phase B): study protocol for a randomised controlled trial
2017 · The Bluebelle Study Group, Barnaby C. Reeves, et al. · Trials · 17
PDF
Maternity healthcare professionals’ experiences of supporting women in decision-making for labour and birth: a qualitative study
2024 · Kitty Hardman, Anna Davies, et al. · BMJ Open · 15
A cross-sectional study to evaluate antenatal care service provision in 3 hospitals in Nepal
2021 · Abi Merriel, Nashna Maharjan, et al. · AJOG Global Reports · 15
PDF
Accounting for bias due to outcome data missing not at random: comparison and illustration of two approaches to probabilistic bias analysis: a simulation study
2024 · Emily Kawabata, Daniel Major-Smith, et al. · BMC Medical Research Methodology · 13
PDF
Codesign and refinement of an optimised antenatal education session to better inform women and prepare them for labour and birth
2024 · Abi Merriel, Miriam Toolan, et al. · BMJ Open Quality · 13
PDF
Glycoprotein acetyls and depression: Testing for directionality and potential causality using longitudinal data and Mendelian randomization analyses
2023 · Daisy C.P. Crick, Eleanor Sanderson, et al. · Journal of Affective Disorders · 13
Feasibility work to inform the design of a randomized clinical trial of wound dressings in elective and unplanned abdominal surgery
2016 · L Andronis, M Calvert, et al. · British journal of surgery · 12
Works count: 80
Citation count: 1,443
H-index: 18
I10-index: 27
Year
Topic
Type