Power and sample-size analysis for the Royston–Parmar combined test in clinical trials with a time-to-event outcome: Correction and program update

Patrick Royston ()
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Patrick Royston: MRC Clinical Trials Unit

Stata Journal, 2018, vol. 18, issue 4, 995-996

Abstract: The changes made to Royston (2018) and to power_ct are i) in sec- tion 2.4 (Sample-size calculation for the combined test), to replace ordinary least- squares (OLS) regression using regress with grouped probit regression using glm; ii) in section 4 (Examples), to revisit the worked examples of sample-size estima- tion in light of the revised estimation procedure; and iii) to update the help file entry for the option n(numlist). The updated software is version 1.2.0.

Keywords: power_ct; update; randomized controlled trial; time-to-event outcome; restricted mean survival time; log-rank test; Cox test; combined test; treatment effect; hypothesis testing; flexible parametric model (search for similar items in EconPapers)
Date: 2018
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