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Table 5 Multivariable regression analysis: intensive care unit and hospital mortality in population subgroupsa

From: Intensive insulin therapy and mortality in critically ill patients

  Period I
(n = 2,366)
1 Mar 01 to 28 Feb 02
Period II
(n = 3,322)
1 Mar 02 to 30 Jun 03
Period III
(n = 4,786)
1 Jul 03 to 28 Feb 05
  OR (95% CI) OR (95% CI) OR (95% CI)
Surgical and trauma ICU population
  n = 1,429 n = 1,991 n = 3,011
ICU mortality 1.00 1.27 (0.97, 1.67) 1.40 (1.08, 1.82)b
Hospital mortality 1.00 1.18 (0.94, 1.48) 1.18 (0.95, 1.47)
Trauma ICU populationc
  n = 854 n = 1,195 n = 1,866
ICU mortality 1.00 1.25 (0.85, 1.84) 1.76 (1.23, 2.53)d
Hospital mortality 1.00 1.12 (0.81, 1.54) 1.16 (0.85, 1.57)
Medical ICU population
  n = 920 n = 1,301 n = 1,641
ICU mortality 1.00 1.12 (0.83, 1.52) 1.10 (0.82, 1.47)
Hospital mortality 1.00 1.02 (0.87, 1.41) 1.11 (0.87, 1.41)
  1. aAll estimates are adjusted for admission age, history of diabetes, Simplified Acute Physiology Score (SAPS) II with age points removed, and mechanical ventilation at ICU admission. bP <0.05 multivariable regression (maximum likelihood estimation). cIn the trauma ICU population, the models also adjust for Injury Severity Score. dP <0.01 multivariable regression (maximum likelihood estimation). CI, confidence interval; ICU, intensive care unit; OR, odds ratio.
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