The ABC of non-inferiority margin setting: an investigation of approaches

por Julious, Steven A
Publicado 2011

Sample sizes for cluster-randomised trials with continuous outcomes: Accounting for uncertainty in a single intra-cluster correlation estimate

por Lewis, Jen, Julious, Steven A
Publicado 2021

Progression criteria in trials with an internal pilot: an audit of publicly funded randomised controlled trials

por Herbert, Esther, Julious, Steven A., Goodacre, Steve
Publicado 2019

An investigation of the impact of futility analysis in publicly funded trials

por Sully, Benjamin GO, Julious, Steven A, Nicholl, Jon
Publicado 2014

Design considerations and analysis planning of a phase 2a proof of concept study in rheumatoid arthritis in the presence of possible non-monotonicity

por Liu, Feng, Walters, Stephen J., Julious, Steven A.
Publicado 2017

An investigation of the constancy of effect in Cochrane systematic reviews in context with the assumptions for noninferiority trials

por Duro, Enass M., Julious, Steven A., Ren, Shijie
Publicado 2022

A retrospective analysis of conditional power assumptions in clinical trials with continuous or binary endpoints

por Edwards, Julia M., Walters, Stephen J., Julious, Steven A.
Publicado 2023

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

por Sully, Ben G O, Julious, Steven A, Nicholl, Jon
Publicado 2013

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

por Billingham, Sophie AM, Whitehead, Amy L, Julious, Steven A
Publicado 2013

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

por Bell, Melanie L, Whitehead, Amy L, Julious, Steven A
Publicado 2018

A study of target effect sizes in randomised controlled trials published in the Health Technology Assessment journal

por Rothwell, Joanne C., Julious, Steven A., Cooper, Cindy L.
Publicado 2018

TRial to Assess Implementation of New research in a primary care Setting (TRAINS): study protocol for a pragmatic cluster randomised controlled trial of an educational intervention...

por Alyami, Rami A., Simpson, Rebecca, Oliver, Phillip, Julious, Steven A.
Publicado 2022

Sample sizes for cancer trials where Health Related Quality of Life is the primary outcome

por Julious, S A, Campbell, M J, Walker, S J, George, S L, Machin, D
Publicado 2000

Adaptive designs undertaken in clinical research: a review of registered clinical trials

por Hatfield, Isabella, Allison, Annabel, Flight, Laura, Julious, Steven A., Dimairo, Munyaradzi
Publicado 2016

A systematic review of the “promising zone” design

por Edwards, Julia M., Walters, Stephen J., Kunz, Cornelia, Julious, Steven A.
Publicado 2020

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

por Lee, Ellen C, Whitehead, Amy L, Jacques, Richard M, Julious, Steven A
Publicado 2014

Missing steps in a staircase: a qualitative study of the perspectives of key stakeholders on the use of adaptive designs in confirmatory trials

por Dimairo, Munyaradzi, Boote, Jonathan, Julious, Steven A., Nicholl, Jonathan P., Todd, Susan
Publicado 2015

Cross-sector surveys assessing perceptions of key stakeholders towards barriers, concerns and facilitators to the appropriate use of adaptive designs in confirmatory trials

por Dimairo, Munyaradzi, Julious, Steven A., Todd, Susan, Nicholl, Jonathan P., Boote, Jonathan
Publicado 2015

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

por Whitehead, Amy L, Julious, Steven A, Cooper, Cindy L, Campbell, Michael J
Publicado 2015

A survey of birth order status of students studying for medical degree at the University of Sheffield

por Clayton, Sarah, Apperley, Elizabeth, Hannon, Fergus, Karia, Anika, Baxter, Victoria, Julious, Steven A
Publicado 2014