PT  - JOURNAL ARTICLE
AU  - Alexandra Barratt
AU  - Peter C. Wyer
AU  - Rose Hatala
AU  - Thomas McGinn
AU  - Antonio L. Dans
AU  - Sheri Keitz
AU  - Virginia Moyer
AU  - Gordon Guyatt for
ED  - ,
TI  - Tips for learners of evidence-based medicine: 1. Relative risk reduction, absolute risk reduction and number needed to treat
AID  - 10.1503/cmaj.1021197
DP  - 2004 Aug 17
TA  - Canadian Medical Association Journal
PG  - 353--358
VI  - 171
IP  - 4
4099  - http://www.cmaj.ca/content/171/4/353.short
4100  - http://www.cmaj.ca/content/171/4/353.full
SO  - CMAJ2004 Aug 17; 171