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TRIALCOUNTS: Stata module to calculate the number of subjects recruited to, and the number having reached subsequent scheduled visits

Author

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  • Matthew Burnell

    (University College London)

Programming Language

Abstract

trialcounts is a program for calculating the number of subjects recruited to, and the number having reached subsequent scheduled visits, in a clinical trial based on supplied linear piecewise recruitment functions, whilst additionally accounting for potential dropout. From these are derived the 'cohort weights' which can be used in the mixedpower program in order to calculate power or sample size for linear mixed models, accounting for the recruitment and dropout functions established in trialcounts at a given point in trial time.

Suggested Citation

  • Matthew Burnell, 2026. "TRIALCOUNTS: Stata module to calculate the number of subjects recruited to, and the number having reached subsequent scheduled visits," Statistical Software Components S459732, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s459732
    Note: This module should be installed from within Stata by typing "ssc install trialcounts". The module is made available under terms of the MIT license (https://opensource.org/licenses/MIT).
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    File URL: http://fmwww.bc.edu/repec/bocode/t/trialcounts.ado
    File Function: program code
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/t/trialcounts.sthlp
    File Function: help file
    Download Restriction: no
    File URL: http://fmwww.bc.edu/repec/bocode/m/ms_recruitment.dta
    Download Restriction: no
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