Sample sizes for self-controlled case series studies

Patrick Musonda, C. Paddy Farrington, Heather J. Whitaker

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


We derive several formulae for the sample size required for a study designed using the self-controlled case series method without age effects. We investigate these formulae by simulation, and identify one based on the signed root likelihood ratio statistic which performs well. We extend this method to allow for age effects, which can have a big impact on the sample size needed. This more general sample size formula is also found to perform well in a broad range of situations
Original languageEnglish
Pages (from-to)2618-2631
Number of pages14
JournalStatistics in Medicine
Issue number15
Publication statusPublished - 2006

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