Table 2

Baseline characteristics

Test cohort (n = 462)

Validation cohort (n = 499)

p-value


ICU length of stay in days (continuous): median (P25-P75)

1.9 (1.2-3.6)

2.0 (1.2-3.9)

0.277

ICU length of stay in days (discrete): median (P25-P75)

3 (2-5)

3 (2-5)

0.360

Patients discharged on the day after surgery: n (%)

147 (31.8)

149 (29.9)

0.511

ICU mortality: n (%)

8 (1.7)

11 (2.2)

0.599

Hospital mortality: n (%)

15 (3.2)

16 (3.2)

0.972

EuroSCORE (additive): median (P25-P75)

5 (3-7)

5 (3-7)

0.202

EuroSCORE (logistic)%: median (P25-P75)

3.9 (2.1-7.4)

4.5 (2.2-8.1)

0.828

Type of surgery

Isolated OPCAB: n (%)

190 (41.1)

179 (35.9)

0.094

Isolated on-pump CAB: n (%)

1 (0.2)

0 (0)

0.298

Valvular surgery (single, multiple and/or combined with CAB or other surgery): n (%)

250 (54.1)

298 (59.7)

0.079

Other cardiac surgery (congenital, aorta ascendens, myxoma ...): n (%)

21 (4.6)

22 (4.4)

0.919

Repeat cardiac surgery: n (%)

27 (5.8)

49 (9.8)

0.023

Surgery post-endocarditis: n (%)

7 (1.5)

7 (1.4)

0.885


Meyfroidt et al. BMC Medical Informatics and Decision Making 2011 11:64   doi:10.1186/1472-6947-11-64

Open Data