TABLE 4

Medication Error Rates, Before and After Implementation of the ACGME Duty Hour Standards

Before ImplementationAfter ImplementationPa
No.Error Rate, Estimate (95% CI), Cases per 100 OrdersNo.Error Rate, Estimate (95% CI), Cases per 100 Orders
No. of orders80038115
No. of errors
    Total1031.29 (1.06–1.56)1221.50 (1.26–1.79).25
    Preventable adverse events50.06 (0.03–0.15)50.06 (0.03–0.14)>.99
    Potential adverse events600.75 (0.58–0.96)560.69 (0.53–0.90).71
        Intercepted potential adverse events380.47 (0.35–0.65)320.39 (0.28–0.56).47
        Nonintercepted potential adverse events220.27 (0.18–0.42)240.30 (0.20–0.44).88
    Medication errors with little potential for harm380.47 (0.35–0.65)610.75 (0.59–0.96).03
No. of resident physician ordering errors851.06 (0.86–1.31)1121.38 (1.15–1.66).08
  • a Fisher's exact test.