PT - JOURNAL ARTICLE AU - Rohan Maharaj TI - Adding cost to number needed to treat: the COPE statistic AID - 10.1136/ebm.12.4.101 DP - 2007 Aug 01 TA - Evidence Based Medicine PG - 101--102 VI - 12 IP - 4 4099 - http://ebm.bmj.com/content/12/4/101.short 4100 - http://ebm.bmj.com/content/12/4/101.full SO - Evid Based Med2007 Aug 01; 12