Ambler, Gareth

The use of fractional polynomials to model continuous risk variables in epidemiology

Royston, P., Ambler, G., & Sauerbrei, W. (1999) · International Journal of Epidemiology

Statistical Methods in EpidemiologyStatistical Methods and Applications

Cited by 1,066

Generic, Simple Risk Stratification Model for Heart Valve Surgery

Ambler, G., Omar, R. Z., Royston, P., Kinsman, R., Keogh, B. E., & Taylor, K. M. (2005) · Circulation

Cardiac Valve Diseases and TreatmentsCardiac, Anesthesia and Surgical Outcomes

Cited by 279

A comparison of imputation techniques for handling missing predictor values in a risk model with a binary outcome

Ambler, G., Omar, R. Z., & Royston, P. (2007) · Statistical Methods in Medical Research

Statistical Methods and Bayesian InferenceStatistical Methods in Epidemiology

Cited by 233

Sample size calculation for a stepped wedge trial

Baio, G., Copas, A., Ambler, G., Hargreaves, J., Beard, E., & Omar, R. Z. (2015) · Trials

Statistical Methods in Clinical TrialsHealth Policy Implementation Science

Cited by 163

A comparison of methods for analysing multiple outcome measures in randomised controlled trials using a simulation study

Vickerstaff, V., Ambler, G., & Omar, R. Z. (2021) · Biometrical Journal

Statistical Methods in Clinical TrialsStatistical Methods and Bayesian Inference

Cited by 26

A Patient Stratification Approach to Identifying the Likelihood of Continued Chronic Depression and Relapse Following Treatment for Depression

Saunders, R., Cohen, Z. D., Ambler, G., DeRubeis, R. J., Wiles, N., Kessler, D., Gilbody, S., Hollon, S. D., Kendrick, T., Watkins, E., et al. (2021) · Journal of Personalized Medicine

Treatment of Major DepressionAnxiety, Depression, Psychometrics, Treatment, Cognitive Processes

Cited by 21