Statistical guidelines for contributors to medical journalsBr Med J (Clin Res Ed) 1983; 287 doi: https://doi.org/10.1136/bmj.287.6388.362-b (Published 30 July 1983) Cite this as: Br Med J (Clin Res Ed) 1983;287:362
Log in using your username and password
Log in through your institution
Register for a free trial to thebmj.com to receive unlimited access to all content on thebmj.com for 14 days.
Sign up for a free trial