Table 3 Odds of surprises and incident/errors under different shift patterns
Surprises (unplanned shifts in care)SurpriseNo surpriseOdds ratio (95% confidence interval)p Value
Cross-cover only13253.87 (1.87 to 8.01)0.001
Day float2460.25 (0.06 to 0.94)0.004
In-house call251970.77 (0.45 to 1.34)0.401
Call and cross-cover7143.39 (1.35 to 8.59)0.008
Night float5520.56 (0.22 to 1.47)0.304
Night float and cross-cover4141.83 (0.61 to 5.51)0.293
Short call3190.98 (0.30 to 3.22)0.976
Any shift with cross-cover26772.97 (1.68 to 5.24)0.000
All593671
Errors/incidents attributed to the hand-offError/incidentNo error/incidentOdds ratio (95% confidence interval)p Value
Cross-cover only10284.42 (1.99 to 9.87)0.001
Day float1470.19 (0.03 to 1.32)0.105
In-house call182040.35 (0.20 to 0.63)0.000
Call and cross-cover6156.20 (3.11 to 12.39)0.000
Night float2550.33 (0.09 to 1.26)0.140
Night float and cross-cover2161.25 (0.31 to 5.11)0.675
Short call0220 (–)
Any shift with cross-cover18594.77 (2.42 to 9.41)0.000
All393871
  • Bold values indicate significance at the 0.005 level.