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

Trials of interventions that aim to slow disease progression may analyze a continuous outcome by comparing its change over time-its slope-between the treated and the untreated group using a linear mixed model. To perform a sample-size calculation for such a trial, one must have estimates of the para...

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Bibliographic Details
Published in:	The Stata journal Vol. 21; no. 3; p. 575
Main Authors:	Nash, Stephen, Morgan, Katy E, Frost, Chris, Mulick, Amy
Format:	Journal Article
Language:	English
Published:	United States 01.09.2021
Subjects:	sample-size calculations power slopepower slopes parallel-arm trial st0647
ISSN:	1536-867X
Online Access:	Get more information
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