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Table 2 Results of generalised estimating equation analysis (odds ratio and its 95% confidence intervals) of seven-day in-hospital mortality between patients admitted to hospital on the first Wednesday in August compared with patients admitted on the last Wednesday in July

From: Assessing the impact of a shadowing programme on in-hospital mortality following trainee doctors’ changeover

Outcome OR (95% CI) p-value
Overall
 Time 0.93 (0.92–0.94) < 0.0001
  Group (changeover group vs control group) 1.03 (0.97–1.09) 0.33
 Intervention (after intervention vs before intervention) 1.04 (0.95–1.15) 0.39
  Group*Intervention 1.03 (0.94–1.13) 0.53
Reallocated by primary diagnosis
Medical
  Time 0.93 (0.92–0.95) < 0.0001
   Group (changeover group vs control group) 1.02 (0.95–1.09) 0.60
  Intervention (after intervention vs before intervention) 1.01 (0.90–1.14) 0.84
   Group*Intervention 1.04 (0.93–1.17) 0.48
Surgical
  Time 0.94 (0.91–0.96) < 0.0001
   Group (changeover group vs control group) 1.06 (0.90–1.25) 0.47
  Intervention (after intervention vs before intervention) 0.99 (0.73–1.33) 0.93
   Group*Intervention 0.96 (0.78–1.20) 0.96
Neoplasm
  Time 0.93 (0.90–0.96) < 0.0001
   Group (changeover group vs control group) 1.08 (0.91–1.28) 0.38
  Intervention (after intervention vs before intervention) 1.45 (1.06–1.96) 0.02
   Group*Intervention 1.04 (0.82–1.33) 0.75