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Table 1 Preoperative continuous variables

From: A comparative analysis of predictive models of morbidity in intensive care unit after cardiac surgery – Part II: an illustrative example

Acronym Description (units) Training set Testing set Cut-off
   Mean SD Mean SD  
Age Age (years) 67.5 8.9 67.5 8.9 71↑
H Height (cm) 167 8.0 167 7.5 n.s.
W Weight(kg) 72.4 11 72.8 12 72↓
BSA Body surface area (m2) 1.79 0.17 1.80 0.17 1.8↓
Pre-HCT Hematocrit (%) 29.7 4.6 29.9 4.2 n.s.
Cr Creatinine (mg/l) 1.09 0.51 1.07 0.38 1.2↑
Alb Albumin (g/l) 3.86 0.44 3.85 0.41 n.s.
Bil Bilirubin (mg/dl) 0.81 0.40 0.83 0.30 n.s.
Pre-CI Cardiac index (l/min/m2) 2.71 0.69 2.70 0.69 n.s.
Pre-PaCO2 Partial pressure of arterial CO2 (mmHg) 34.0 4.5 34.2 4.6 n.s.
  1. ↑ or ↓: increased morbidity risk for values greater or less than cut-off, respectively (n.s.: not statistically significant); SD, standard deviation.