PT - JOURNAL ARTICLE AU - Neighbor, William E. TI - Measures Of Clinical Effectiveness: The Numbers Needed To Treat AID - 10.3122/jabfm.4.6.469 DP - 1991 Nov 01 TA - The Journal of the American Board of Family Practice PG - 469--472 VI - 4 IP - 6 4099 - http://www.jabfm.org/content/4/6/469.short 4100 - http://www.jabfm.org/content/4/6/469.full SO - J Am Board Fam Med1991 Nov 01; 4