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Table 1 Variables found to be significant in the majority of bootstrap replications run on the UK derivation cohort for the two outcomes

From: Derivation and validation of a prognostic model for postoperative risk stratification of critically ill patients with faecal peritonitis

Variable HR HR 95% CI coeff coeff 95% CI p
6 month mortality
 Age 1.05 1.03–1.07 0.045 0.02–0.06 <0.001
 SOFA score 1.20 1.12–1.28 0.18 0.11–0.25 <0.001
 Low temperature 0.76 0.63–0.91 [−0.28] [−0.46]–[−0.09] 0.004
 High heart rate 1.01 1.01–1.02 0.01 0.01–0.02 0.007
 Haematocrit 0.97 0.94–0.99 [−0.031] [−0.059]–[−0.003] 0.028
28-day mortality
 Age 1.05 1.03–1.08 0.049 0.03–0.07 <0.001
 SOFA score 1.22 1.12–1.33 0.2 0.11–0.29 <0.001
 Low temperature 0.70 0.55–0.88 [−0.36] [−0.59]–[−0.13] 0.002
 High heart rate 1.01 1–1.02 0.01 [−0.001]–0.2 0.07
 Haematocrit 0.99 0.95–1.02 [−0.013] [−0.047]–0.022 0.47
  1. HR hazard ratio; 95% CI 95% confidence interval, coeff coefficient, SOFA Sequential Organ Failure Assessment; the use of the square brackets [] indicates negative values