Neither off the peg nor made to measure calculations are fit for purposeBMJ 2012; 345 doi: http://dx.doi.org/10.1136/bmj.e6585 (Published 02 October 2012) Cite this as: BMJ 2012;345:e6585
- Paul D P Pharoah, public health doctor1
- 1Strangeways Research Laboratory, University of Cambridge, Cambridge CB1 8RN, UK
Norman and colleagues criticise “conventional sample size calculations, based on guesses about statistical parameters” because they “are subject to large uncertainties.” They then propose …
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