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Table 4 Predictors associated with 30-day unplanned hospital readmission of ICU survivors

From: Predictors associated with unplanned hospital readmission of medical and surgical intensive care unit survivors within 30 days of discharge

  Medical Surgical
(n = 147,840) (n = 339,228)
Variable OR (95% CI) OR (95% CI)
Teaching hospital 0.79 (0.75–0.84)
Hospital size
 < 399 beds Reference Reference
 400–799 beds 0.98 (0.93–1.05) 0.99 (0.94–1.04)
 > 800 beds 0.77 (0.69–0.87) 0.90 (0.84–0.97)
CCI 1.10 (1.08–1.12) 1.05 (1.04–1.06)
Category of primary admission diagnosis
 Cardiac Reference Reference
 Respiratory 1.30 (1.17–1.45) 1.51 (1.31–1.75)
 Neurologic 0.64 (0.58–0.70) 1.02 (0.95–1.09)
 Gastrointestinal 1.18 (1.02–1.36) 1.59 (1.46–1.73)
 Malignancy 0.85 (0.75–0.97) 1.18 (1.10–1.26)
 Metabolic and renal 1.25 (1.10–1.43) 1.58 (1.38–1.79)
 Other 0.93 (0.84–1.03) 0.99 (0.91–1.08)
Coma on admission 0.87 (0.76–0.99)  
Hospital length of stay
 1–15 days Reference Reference
 16–30 days 1.44 (1.34–1.54) 1.21 (1.14–1.27)
 31–45 days 1.62 (1.47–1.78) 1.43 (1.34–1.53)
 > 45 days 1.58 (1.43–1.75) 1.56 (1.46–1.68)
Discharge destination
 Home Reference Reference
 Other hospital 0.48 (1.47–1.78) 0.53 (0.50–0.57)
 Skilled nursing facility 1.46 (1.26–1.69) 1.46 (1.23–1.73)
 Others 1.38 (1.02–1.65) 0.88 (0.70–1.08)
Stress ulcer prophylaxis 1.22 (1.15–1.29)
pRBC infusion 1.16 (1.05–1.28) 1.43 (1.37–1.51)
Low-dose steroid 1.14 (1.01–1.29) 1.08 (1.00–1.16)
Anticoagulation 0.81 (0.76–0.87)
TPN 1.05 (1.00–1.09)
Antibiotics 1.09 (1.02–1.17)
RRT 1.28 (1.15–1.41) 1.24 (1.15–1.34)
Ventilation 1.18 (1.09–1.27)
Tracheostomy 0.83 (0.74–0.95)
  1. ICU intensive care unit, OR odds ratio, CI confidence interval, CCI Charlson comorbidity index, pRBC packed red blood cells, FFP fresh frozen plasma, TPN total parental nutrition, RRT renal replacement therapy