“…Hospital LOS was evaluated by eight studies (17,21,22,24,27,33,34,46), including four CPOE studies (17, 21, 22, 24), one sniffer (46), and three CDS systems (27,33,34). CPOE trended toward a reduction in LOS (mean decrease, 0.67 d; 95% CI, -2.07 to 0.73), though with significant heterogeneity (I 2 = 82%).…”