“…[23][24][25][26][27] Of the seventeen studies, seven were randomized controlled trials, 11,12,14,19,23,24,26 eight were pre-intervention vs. postintervention studies, 15,16,18,[20][21][22]25,27 and two had a concurrent control and intervention groups, but were not randomized. 13,17 Eleven studies examined physician ordering of laboratory or radiology testing, [11][12][13][14][15][16][17][18][19]23,24 while six looked at medication choice. [20][21][22][25][26][27] The details of the study design, study size, bias considerations, and follow-up period for the included studies are summarized in Table 2.…”