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The Stata Journal
Volume 18 Number 2: pp. 387-394



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Attrition diagrams for clinical trials and meta-analyses in Stata

Christiaan H. Righolt
Vaccine and Drug Evaluation Centre
Department of Community Health Sciences
University of Manitoba
Winnipeg, Canada
Christiaan.Righolt@umanitoba.ca
Salaheddin M. Mahmud
Vaccine and Drug Evaluation Centre
Department of Community Health Sciences
University of Manitoba
Winnipeg, Canada
Salah.Mahmud@umanitoba.ca
Abstract.  In this article, we present attrition, a suite of commands to simplify the maintenance and documentation of implemented exclusion criteria and attrition conditions using standard Stata facilities and to generate an attrition diagram. attrition can be used, both from the command line and in do-files, to keep the diagram up to date with the analysis it documents. Six subcommands (set, exclude, count, tab, list, graph) allow the diagram to be constructed in a versatile way.
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View all articles by these authors: Christiaan H. Righolt, Salaheddin M. Mahmud

View all articles with these keywords: attrition set, attrition exclude, attrition count, attrition tab, attrition list, attrition graph, attrition diagram, inclusion variable, clinical trial, meta-analysis

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