Whitehead, Amy L

Estimating the sample size for a pilot randomised trial to minimise the overall trial sample size for the external pilot and main trial for a continuous outcome variable

Whitehead, A. L., Julious, S. A., Cooper, C. L., & Campbell, M. J. (2016) · Statistical Methods in Medical Research

Statistical Methods in Clinical TrialsStatistical Methods in Epidemiology

Cited by 1,936

An audit of sample sizes for pilot and feasibility trials being undertaken in the United Kingdom registered in the United Kingdom Clinical Research Network database

Billingham, S. A., Whitehead, A. L., & Julious, S. A. (2013) · BMC Medical Research Methodology

Statistical Methods in Clinical TrialsMeta-analysis and systematic reviews

Cited by 962

Sample size requirements to estimate key design parameters from external pilot randomised controlled trials: a simulation study

Teare, M. D., Dimairo, M., Shephard, N., Hayman, A., Whitehead, A., & Walters, S. J. (2014) · Trials

Statistical Methods in Clinical TrialsMeta-analysis and systematic reviews

Cited by 773

The statistical interpretation of pilot trials: should significance thresholds be reconsidered?

Lee, E. C., Whitehead, A. L., Jacques, R. M., & Julious, S. A. (2014) · BMC Medical Research Methodology

Statistical Methods in Clinical TrialsStatistical Methods and Bayesian Inference

Cited by 423

Guidance for using pilot studies to inform the design of intervention trials with continuous outcomes

Bell, M. L., Whitehead, A. L., & Julious, S. A. (2018) · Clinical Epidemiology

Statistical Methods in Clinical TrialsStatistical Methods in Epidemiology

Cited by 280

Systemic Chemotherapy with or without Cetuximab in Patients with Resectable Colorectal Liver Metastasis (New EPOC): Long-Term Results of a Multicentre, Randomised, Controlled, Phase 3 Trial

Bridgewater, J. A., Pugh, S. A., Maishman, T., Eminton, Z., Mellor, J., Whitehead, A., Stanton, L., Radford, M., Corkhill, A., Griffiths, G. O., et al. (2020) · The Lancet Oncology

Colorectal Cancer Treatments and StudiesColorectal Cancer Surgical Treatments

Cited by 255

Are pilot trials useful for predicting randomisation and attrition rates in definitive studies: a review of publicly funded trials

Cooper, C. L., Whitehead, A., Pottrill, E., Julious, S. A., & Walters, S. J. (2018) · Clinical Trials

Statistical Methods in Clinical TrialsMeta-analysis and systematic reviews

Cited by 59