Steven A. Julious

Best Publications

• Sample size of 12 per group rule of thumb for a pilot study

  Steven A. Julious

  3162
  Citations

• 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

  Amy L Whitehead;Steven A Julious;Cindy L Cooper;Michael J Campbell

  1853
  Citations

• 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

  Sophie A M Billingham;Amy L Whitehead;Steven A Julious

  931
  Citations

• Sample sizes for clinical trials with normal data.

  Steven A. Julious

  685
  Citations

• Estimating sample sizes for binary, ordered categorical, and continuous outcomes in two group comparisons

  M J Campbell;S A Julious;D G Altman

  594
  Citations

• Recruitment and retention of participants in randomised controlled trials: a review of trials funded and published by the United Kingdom Health Technology Assessment Programme.

  Stephen J Walters;Inês Bonacho Dos Anjos Henriques-Cadby;Oscar Bortolami;Laura Flight

  497
  Citations

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

  Ellen C Lee;Amy L Whitehead;Richard M Jacques;Steven A Julious

  473
  Citations

• A reinvestigation of recruitment to randomised, controlled, multicenter trials: a review of trials funded by two UK funding agencies

  Ben G O Sully;Steven A Julious;Jon Nicholl

  464
  Citations

• DELTA2 guidance on choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial

  Jonathan A. Cook;Steven A. Julious;William Sones;Lisa V. Hampson;Lisa V. Hampson

  356
  Citations

• Sample Sizes for Clinical Trials

  Steven A. Julious

  295
  Citations

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

  Melanie L Bell;Amy L Whitehead;Steven A Julious

  260
  Citations

• Using confidence intervals around individual means to assess statistical significance between two means

  Steven A. Julious

  239
  Citations

• Computer Therapy Compared With Usual Care for People With Long-Standing Aphasia Poststroke A Pilot Randomized Controlled Trial

  Rebecca Palmer;Pam Enderby;Cindy Cooper;Nick Latimer

  217
  Citations

• Self-managed, computerised speech and language therapy for patients with chronic aphasia post-stroke compared with usual care or attention control (Big CACTUS): a multicentre, single-blinded, randomised controlled trial.

  Rebecca Palmer;Munyaradzi Dimairo;Cindy L. Cooper;Pam Enderby

  197
  Citations

• DELTA2 guidance on choosing the target difference and undertaking and reporting the sample size calculation for a randomised controlled trial

  Jonathan A Cook;Steven A Julious;William Sones;Lisa V Hampson;Lisa V Hampson

  183
  Citations

• Why do we continue to use standardized mortality ratios for small area comparisons

  Steven A. Julious;Jon Nicholl;Steve George

  171
  Citations

• Measurement in clinical trials: a neglected issue for statisticians?

  Stephen Senn;Steven Julious

  153
  Citations

• The Adaptive designs CONSORT Extension (ACE) statement: a checklist with explanation and elaboration guideline for reporting randomised trials that use an adaptive design

  Munyaradzi Dimairo;Philip Pallmann;James Wason;James Wason;Susan Todd

  142
  Citations

• Two‐sided confidence intervals for the single proportion: comparison of seven methods by Robert G. Newcombe, Statistics in Medicine 1998; 17:857–872

  Steven A. Julious

  138
  Citations

• Practical guide to sample size calculations: non-inferiority and equivalence trials

  Laura Flight;Steven A. Julious

  121
  Citations