Psych CASC / OSCE · Foundations — biostatistics for psychiatry exams
Journal club biostatistics teaching — CASC/communication station
MRCPsych/FRANZCP-style teaching station: ARR/NNT, p-value definition, CI reading for HR, and clear non-intimidating communication.
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Study tools
Target exams
FRANZCPMRCPsychABPNMD-DNB
Prompt
You are the psychiatry registrar running a 10-minute journal club with a foundation doctor. You must teach calculation of NNT from response rates, correct a p-value misinterpretation, and explain why a non-significant HR CI that includes 1 does not prove equivalence.
Station brief
Format. Teaching/communication station, approximately 8–10 minutes. Facilitate understanding, not a monologue. [2]
Candidate instructions. Using the abstract numbers provided, walk the foundation doctor through ARR and NNT, correct a wrong definition of p, and interpret an HR with CI crossing 1. Use plain language and a whiteboard structure. [1][4]
References5ShowHide
- [1]Cook RJ, Sackett DL The number needed to treat: a clinically useful measure of treatment effect BMJ, 1995.PMID 7873954
- [2]Greenland S, Senn SJ, Rothman KJ, et al. Statistical tests, P values, confidence intervals, and power: a guide to misinterpretations Eur J Epidemiol, 2016.PMID 27209009
- [3]Altman DG, Bland JM Absence of evidence is not evidence of absence BMJ, 1995.PMID 7647644
- [4]Gardner MJ, Altman DG Confidence intervals rather than P values: estimation rather than hypothesis testing Br Med J (Clin Res Ed), 1986.PMID 3082422
- [5]Spruance SL, Reid JE, Grace M, Samore M Hazard ratio in clinical trials Antimicrob Agents Chemother, 2004.PMID 15273082