Table 4

The adjusted association between increasing weekly work hours and resident physician-reported adverse safety outcomes

Weekly work hours (n=person months)
≤60
n=27 989
>60 and ≤70
n=17 175
>70 and ≤80
n=19 221
>80
n=13 716
P value
Attentional failuresRef1.71 (1.60 to 1.81)2.25 (2.12 to 2.39)3.50 (3.28 to 3.73)<0.001
Medical errorsRef1.82 (1.71 to 1.94)2.53 (2.38 to 2.68)3.58 (3.36 to 3.82)<0.001
PAERef2.13 (1.79 to 2.53)2.66 (2.26 to 3.14)3.89 (3.27 to 4.63)<0.001
Fatal PAERef1.75 (1.16 to 2.64)2.69 (1.84 to 3.94)2.39 (1.59 to 3.59)<0.001
  • All models are adjusted for age, gender, specialty, community versus university programme, hours in patient care and cohort. Created by the authors.

  • PAE, preventable adverse event; Ref, reference.