How important is the linearity assumption in a sample size calculation for a randomised controlled trial where treatment is anticipated to affect a rate of change?

por Morgan, Katy E., White, Ian R., Frost, Chris
Publicado 2023

Power and sample-size calculations for trials that compare slopes over time: Introducing the slopepower command

por Nash, Stephen, Morgan, Katy E., Frost, Chris, Mulick, Amy
Publicado 2021

Reflection on modern methods: calculating a sample size for a repeatability sub-study to correct for measurement error in a single continuous exposure

por Morgan, Katy E, Cook, Sarah, Leon, David A, Frost, Chris
Publicado 2019

Increasing the Availability of Psychological Treatments: A Multinational Study of a Scalable Method for Training Therapists

por O'Connor, Marianne, Morgan, Katy E, Bailey-Straebler, Suzanne, Fairburn, Christopher G, Cooper, Zafra
Publicado 2018

The quality of reporting in cluster randomised crossover trials: proposal for reporting items and an assessment of reporting quality

por Arnup, Sarah J., Forbes, Andrew B., Kahan, Brennan C., Morgan, Katy E., McKenzie, Joanne E.
Publicado 2016

The use of the cluster randomized crossover design in clinical trials: protocol for a systematic review

por Arnup, Sarah J, Forbes, Andrew B, Kahan, Brennan C, Morgan, Katy E, McDonald, Steve, McKenzie, Joanne E
Publicado 2014

Using the Internet to Train Therapists: Randomized Comparison of Two Scalable Methods

por Cooper, Zafra, Bailey-Straebler, Suzanne, Morgan, Katy E, O'Connor, Marianne E, Caddy, Caroline, Hamadi, Layla, Fairburn, Christopher G
Publicado 2017

The association between anthropometric measures of adiposity and the progression of carotid atherosclerosis

por Imahori, Yume, Mathiesen, Ellisiv B., Morgan, Katy E., Frost, Chris, Hughes, Alun D., Hopstock, Laila A., Johnsen, Stein Harald, Emaus, Nina, Leon, David A.
Publicado 2020

Interpreting population reach of a large, successful physical activity trial delivered through primary care

por Kerry, Sally M., Morgan, Katy E., Limb, Elizabeth, Cook, Derek G., Furness, Cheryl, Carey, Iain, DeWilde, Steve, Victor, Christina R., Iliffe, Steve, Whincup, Peter, Ussher, Michael, Ekelund, Ulf, Fox-Rushby, Julia, Ibison, Judith, Harris, Tess
Publicado 2018