title: Statistics: how many?
abstract: The fourth in our series of articles on statistics for clinicians focuses on how we determine the appropriate number of subjects to include in an experimental study to provide sufficient statistical "power".
authors: School of Mathematics and Statistics, University of Glasgow, Glasgow, UK.
authors: M
authors: M
authors: Scott
authors: D
authors: D
authors: Flaherty
authors: J
authors: J
authors: Currall
mesh_terms: D000818:Animals; D003627:Data Interpretation, Statistical; D006801:Humans; D018579:Patient Selection; D013223:Statistics as Topic / Q000379:methods*; D014730:Veterinary Medicine / Q000706:statistics & numerical data*