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Table 4 Multivariate analysis of adverse perioperative outcome and mortality

From: Association between emergency department length of stay and adverse perioperative outcomes in emergency surgery: a cohort study in two Colombian University hospitals

  Unadjusted Adjusted P
OR 95% CI OR 95% CI
Adverse perioperative outcome
 Prolonged ED-LOS (>  48 h) 2.55 (2.04 - 3.18) 1.99 (1.13 - 3.51) 0.017
 Center 2.56 (1.99 - 3.29) 1.55 (1.16 - 2.06) 0.003
 Preoperative medical conditions
  Hypertension 2.12 (1.71 - 2.64) 0.97 (0.73 - 1.28) 0.807
  Diabetes 2.07 (1.58 - 2.71) 1.19 (0.85 - 1.64) 0.308
  Renal Disease 3.07 (2.10 - 4.48) 1.56 (1.01 - 2.43) 0.047
 Risk factors for 30-day mortalitya
  1 or 2 risk factors 3.77 (2.83 - 5.01) 4.20 (2.75 - 6.41) < 0.001
  ≥ 3 risk factors 8.19 (5.83 - 11.50) 9.44 (5.50 - 16.2) < 0.001
 Preoperative interventions
  Number of assesments 1.07 (1.06 - 1.08) 1.05 (1.04 - 1.07) < 0.001
  Duration of surgery 1.35 (1.24 - 1.48) 1.20 (1.09 - 1.31) < 0.001
Mortality
 Prolonged ED-LOS (>  48 h) 1.50 (1.07 - 2.10) 2.52 (0.91 - 7.01) 0.076
 Center 2.07 (1.37 - 3.14) 1.28 (0.82 - 2.00) 0.271
 Preoperative medical conditions
  Diabetes 1.65 (1.11 - 2.46) 1.19 (0.77 - 1.83) 0.442
  Renal Disease 2.87 (1.80 - 4.57) 1.94 (1.16 - 3.24) 0.012
 Risk factors for 30-day mortalitya
  1 or 2 risk factors 3.87 (2.23 - 6.72) 4.63 (2.12 - 10.08) < 0.001
  ≥ 3 risk factors 8.31 (4.67 - 14.78) 8.88 (3.83 - 20.59) < 0.001
 Preoperative interventions
  Number of assesments 1.01 (1.01 - 1.02) 1.01 (1.00 -1.01) 0.004
  Abdominal surgery 3.72 (2.12 - 6.53) 3.46 (1.93 - 6.20) < 0.001
  Duration of surgery 1.2 (1.09 - 1.33) 1.14 (1.02 - 1.27) 0.019
  1. aRisk factors as defined by VISION study [3]: Age ≥ 65 years, history of coronary artery disease, congestive heart failure, PVD, stroke, COPD, active cancer and major general surgery
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