Works by Clayton, Gemma

Results: 26

Use of external evidence for design and Bayesian analysis of clinical trials: a qualitative study of trialists' views.
Published in:
2021
By:
- Clayton, Gemma L.;
- Elliott, Daisy;
- Higgins, Julian P. T.;
- Jones, Hayley E.
Publication type:
journal article
Changes in women's physical function in mid-life by reproductive age and hormones: a longitudinal study.
Published in:
BMC Women's Health, 2022, v. 22, n. 1, p. 1, doi. 10.1186/s12905-022-02070-9
By:
- Kilpi, Fanny;
- Soares, Ana Goncalves;
- Clayton, Gemma L.;
- Fraser, Abigail;
- Welsh, Paul;
- Sattar, Naveed;
- Nelson, Scott M.;
- Tilling, Kate;
- Lawlor, Deborah A.
Publication type:
Article
Accounting for bias due to outcome data missing not at random: comparison and illustration of two approaches to probabilistic bias analysis: a simulation study.
Published in:
BMC Medical Research Methodology, 2024, v. 24, n. 1, p. 1, doi. 10.1186/s12874-024-02382-4
By:
- Kawabata, Emily;
- Major-Smith, Daniel;
- Clayton, Gemma L.;
- Shapland, Chin Yang;
- Morris, Tim P.;
- Carter, Alice R.;
- Fernández-Sanlés, Alba;
- Borges, Maria Carolina;
- Tilling, Kate;
- Griffith, Gareth J.;
- Millard, Louise A. C.;
- Smith, George Davey;
- Lawlor, Deborah A.;
- Hughes, Rachael A.
Publication type:
Article
The Effect of Patient-Specific Cerebral Oxygenation Monitoring on Postoperative Cognitive Function: A Multicenter Randomized Controlled Trial.
Published in:
Journal of Medical Internet Research, 2015, v. 17, n. 12, p. 1, doi. 10.2196/resprot.4562
By:
- Ellis, Lucy;
- Murphy, Gavin J;
- Culliford, Lucy;
- Dreyer, Lucy;
- Clayton, Gemma;
- Downes, Richard;
- Nicholson, Eamonn;
- Stoica, Serban;
- Reeves, Barnaby C;
- Rogers, Chris A
Publication type:
Article
Empirical Evidence of Study Design Biases in Randomized Trials: Systematic Review of Meta-Epidemiological Studies.
Published in:
PLoS ONE, 2016, v. 11, n. 7, p. 1, doi. 10.1371/journal.pone.0159267
By:
- Page, Matthew J.;
- Higgins, Julian P. T.;
- Clayton, Gemma;
- Sterne, Jonathan A. C.;
- Hróbjartsson, Asbjørn;
- Savović, Jelena
Publication type:
Article
How Often Do Safety Signals Occur by Chance in First‐in‐Human Trials?
Published in:
CTS: Clinical & Translational Science, 2018, v. 11, n. 5, p. 471, doi. 10.1111/cts.12558
By:
- Clayton, Gemma L.;
- Schachter, Asher D.;
- Magnusson, Baldur;
- Li, Yue;
- Colin, Laurence
Publication type:
Article
Cardiovascular health in the menopause transition: a longitudinal study of up to 3892 women with up to four repeated measures of risk factors.
Published in:
2022
By:
- Clayton, Gemma L.;
- Soares, Ana Gonçalves;
- Kilpi, Fanny;
- Fraser, Abigail;
- Welsh, Paul;
- Sattar, Naveed;
- Nelson, Scott M.;
- Tilling, Kate;
- Lawlor, Deborah A.
Publication type:
journal article
Body mass index in parents and their adult offspring: A systematic review and meta‐analysis.
Published in:
Obesity Reviews, 2024, v. 25, n. 1, p. 1, doi. 10.1111/obr.13644
By:
- Zhang, Jie;
- Clayton, Gemma L.;
- Overvad, Kim;
- Olsen, Anja;
- Lawlor, Deborah A.;
- Dahm, Christina C.
Publication type:
Article
Exploring the impact of selection bias in observational studies of COVID-19: a simulation study.
Published in:
International Journal of Epidemiology, 2023, v. 52, n. 1, p. 44, doi. 10.1093/ije/dyac221
By:
- Millard, Louise A C;
- Fernández-Sanlés, Alba;
- Carter, Alice R;
- Hughes, Rachael A;
- Tilling, Kate;
- Morris, Tim P;
- Major-Smith, Daniel;
- Griffith, Gareth J;
- Clayton, Gemma L;
- Kawabata, Emily;
- Smith, George Davey;
- Lawlor, Deborah A;
- Borges, Maria Carolina
Publication type:
Article
1484Selection bias in COVID-19 research: Prospective analyses of two UK cohort studies.
Published in:
International Journal of Epidemiology, 2021, v. 50, p. 1, doi. 10.1093/ije/dyab168.442
By:
- Fernández-Sanlés, Alba;
- Carter, Alice;
- Millard, Louise;
- Smith, Dan;
- Griffith, Gareth;
- Clayton, Gemma;
- Hughes, Rachel;
- Morris, Tim;
- Lawlor, Deborah;
- Tilling, Kate;
- Borges, Maria Carolina;
- group, on behalf of the COVIDITY working
Publication type:
Article
1518Preterm birth and trajectories of cardiometabolic health measures from birth to adulthood.
Published in:
International Journal of Epidemiology, 2021, v. 50, p. 1, doi. 10.1093/ije/dyab168.137
By:
- Clayton, Gemma;
- Howe, Laura;
- O'Keeffe, Linda;
- Lewandowski, Adam;
- Lawlor, Deborah;
- Fraser, Abigail
Publication type:
Article
1517The effect of pregnancy on cardiovascular health in early adulthood: a difference in difference analysis.
Published in:
International Journal of Epidemiology, 2021, v. 50, p. 1, doi. 10.1093/ije/dyab168.136
By:
- Clayton, Gemma;
- Howe, Laura;
- Parks, Chloe;
- Leyland, Kirsten;
- Hughes, Alun;
- Fraser, Abigail
Publication type:
Article
Time-sensitive testing pressures and COVID-19 outcomes: are socioeconomic inequalities over the first year of the pandemic explained by selection bias?
Published in:
BMC Public Health, 2023, v. 23, n. 1, p. 1, doi. 10.1186/s12889-023-16767-5
By:
- Carter, Alice R;
- Clayton, Gemma L;
- Borges, M Carolina;
- Howe, Laura D;
- Hughes, Rachael A;
- Smith, George Davey;
- Lawlor, Deborah A;
- Tilling, Kate;
- Griffith, Gareth J
Publication type:
Article
The impact of reproductive factors on the metabolic profile of females from menarche to menopause.
Published in:
Nature Communications, 2024, v. 15, n. 1, p. 1, doi. 10.1038/s41467-023-44459-6
By:
- Clayton, Gemma L.;
- Borges, Maria Carolina;
- Lawlor, Deborah A.
Publication type:
Article
Comparison of alternate preparative techniques on wall thickness in coronary artery bypass grafts: The HArVeST randomized controlled trial.
Published in:
2021
By:
- Angelini, Gianni D.;
- Johnson, Tom;
- Culliford, Lucy;
- Murphy, Gavin;
- Ashton, Kate;
- Harris, Tracy;
- Edwards, Julia;
- Clayton, Gemma;
- Kim, Yongcheol;
- Newby, Andrew C.;
- Reeves, Barney C.;
- Rogers, Chris A.
Publication type:
journal article
Growth rate of clinically diagnosed superficial basal cell carcinoma and changes in dermoscopic features over time.
Published in:
Australasian Journal of Dermatology, 2020, v. 61, n. 4, p. 330, doi. 10.1111/ajd.13352
By:
- Sykes, Adrian Jonathan;
- Wlodek, Christina;
- Trickey, Adam;
- Clayton, Gemma L;
- Oakley, Amanda
Publication type:
Article
Metabolomic Identification of a Novel, Externally Validated Predictive Test for Gestational Diabetes Mellitus.
Published in:
Journal of Clinical Endocrinology & Metabolism, 2022, v. 107, n. 8, p. e3479, doi. 10.1210/clinem/dgac240
By:
- Sovio, Ulla;
- Clayton, Gemma L.;
- Cook, Emma;
- Gaccioli, Francesca;
- Charnock-Jones, D. Stephen;
- Lawlor, Deborah A.;
- Smith, Gordon C. S.
Publication type:
Article
Systematic Review of Clinical Prediction Models for the Risk of Emergency Caesarean Births.
Published in:
BJOG: An International Journal of Obstetrics & Gynaecology, 2025, v. 132, n. 3, p. 231, doi. 10.1111/1471-0528.17948
By:
- Hunt, Alexandra;
- Bonnett, Laura;
- Heron, Jon;
- Lawton, Michael;
- Clayton, Gemma;
- Smith, Gordon;
- Norman, Jane;
- Kenny, Louise;
- Lawlor, Deborah;
- Merriel, Abi;
- McGuiness, Sheelagh;
- Davies, Anna;
- Lavender, Dame Tina;
- Burden, Christy;
- Ives, Jonathan;
- Grant, Simon;
- Abdel‐Fattah, Sherif;
- Bakhbakhi, Danya;
- Demetri, Andrew;
- Black, Mairead
Publication type:
Article
Preterm Birth and Cardiometabolic Health Trajectories From Birth to Adulthood: The Avon Longitudinal Study of Parents and Children.
Published in:
Journal of the American Heart Association, 2025, v. 14, n. 3, p. 1, doi. 10.1161/JAHA.123.030823
By:
- Clayton, Gemma L.;
- Howe, Laura D.;
- O'Keeffe, Linda M.;
- Lewandowski, Adam J.;
- Lawlor, Deborah A.;
- Fraser, Abigail
Publication type:
Article
Combining meta‐epidemiological study datasets on commercial funding of randomised clinical trials: Database, methods, and descriptive results of the COMFIT study.
Published in:
Research Synthesis Methods, 2022, v. 13, n. 2, p. 214, doi. 10.1002/jrsm.1527
By:
- Nejstgaard, Camilla Hansen;
- Lundh, Andreas;
- Abdi, Suhayb;
- Clayton, Gemma;
- Gelle, Mustafe Hassan Adan;
- Laursen, David Ruben Teindl;
- Olorisade, Babatunde Kazeem;
- Savović, Jelena;
- Hróbjartsson, Asbjørn
Publication type:
Article
Ten questions to consider when interpreting results of a meta‐epidemiological study—the MetaBLIND study as a case.
Published in:
Research Synthesis Methods, 2020, v. 11, n. 2, p. 260, doi. 10.1002/jrsm.1392
By:
- Moustgaard, Helene;
- Jones, Hayley E;
- Savović, Jelena;
- Clayton, Gemma L;
- Sterne, Jonathan AC;
- Higgins, Julian PT;
- Hróbjartsson, Asbjørn
Publication type:
Article
Maternal Pre-Pregnancy BMI, Offspring Adiposity in Late Childhood, and Age of Weaning: A Causal Mediation Analysis.
Published in:
Nutrients, 2023, v. 15, n. 13, p. 2970, doi. 10.3390/nu15132970
By:
- Zhang, Jie;
- Clayton, Gemma L.;
- Hansen, Stefan Nygaard;
- Olsen, Anja;
- Lawlor, Deborah A.;
- Dahm, Christina C.
Publication type:
Article
The INVEST project: investigating the use of evidence synthesis in the design and analysis of clinical trials.
Published in:
2017
By:
- Clayton, Gemma L.;
- Smith, Isabelle L.;
- Higgins, Julian P. T.;
- Mihaylova, Borislava;
- Thorpe, Benjamin;
- Cicero, Robert;
- Lokuge, Kusal;
- Forman, Julia R.;
- Tierney, Jayne F.;
- White, Ian R.;
- Sharples, Linda D.;
- Jones, Hayley E.
Publication type:
journal article
Social inequalities in pregnancy metabolic profile: findings from the multi-ethnic Born in Bradford cohort study.
Published in:
BMC Pregnancy & Childbirth, 2024, v. 24, n. 1, p. 1, doi. 10.1186/s12884-024-06538-4
By:
- Elhakeem, Ahmed;
- Clayton, Gemma L.;
- Soares, Ana Goncalves;
- Taylor, Kurt;
- Maitre, Léa;
- Santorelli, Gillian;
- Wright, John;
- Lawlor, Deborah A.;
- Vrijheid, Martine
Publication type:
Article
Photography of the Histological and Radiological Analysis of the Ligaments of the Distal Radioulnar Joint.
Published in:
Journal of Visual Communication in Medicine, 2013, v. 36, n. 1/2, p. 20, doi. 10.3109/17453054.2013.790128
By:
- Clayton, Gemma
Publication type:
Article
Integrating multiple lines of evidence to assess the effects of maternal BMI on pregnancy and perinatal outcomes.
Published in:
BMC Medicine, 2024, v. 22, n. 1, p. 1, doi. 10.1186/s12916-023-03167-0
By:
- Borges, Maria Carolina;
- Clayton, Gemma L.;
- Freathy, Rachel M.;
- Felix, Janine F.;
- Fernández-Sanlés, Alba;
- Soares, Ana Gonçalves;
- Kilpi, Fanny;
- Yang, Qian;
- McEachan, Rosemary R. C.;
- Richmond, Rebecca C.;
- Liu, Xueping;
- Skotte, Line;
- Irizar, Amaia;
- Hattersley, Andrew T.;
- Bodinier, Barbara;
- Scholtens, Denise M.;
- Nohr, Ellen A.;
- Bond, Tom A.;
- Hayes, M. Geoffrey;
- West, Jane
Publication type:
Article