Table 3 Patient demographics and baseline characteristics of training and teat cohort
Cohort | P value | ||
|---|---|---|---|
Training Cohort N = 10,037 | Internal Test Cohort N = 4,301 | ||
Sex (n, %) | 0.268 | ||
Male | 6,519 (64.9%) | 2,752 (64.0%) | |
Female | 3,518 (35.1%) | 1,549 (36.0%) | |
Age (years) | 0.399 | ||
< 18 | 141 (1.4%) | 51 (1.2%) | |
18–64 | 5,524 (55.0%) | 2,339 (54.4%) | |
> 64 | 4,372 (43.6%) | 1,911 (44.4%) | |
ASA physical status (n, %) | 0.244 | ||
Class II | 708 (7.1%) | 324 (7.5%) | |
Class III | 8,647 (86.2%) | 3,720 (86.5%) | |
Class IV | 653 (6.5%) | 245 (5.7%) | |
Class V | 29 (0.3%) | 12 (0.3%) | |
BMI (kg/m2) | 0.615 | ||
< 18.5 | 567 (5.6%) | 255 (5.9%) | |
18.5–25 | 5,521 (55.0%) | 2,399 (55.8%) | |
> 25 | 3,352 (33.4%) | 1,406 (32.7%) | |
Stay in bed | 597 (5.9%) | 241 (5.6%) | |
Complications (n, %) | 0.562 | ||
N.A. | 4,633 (46.2%) | 2,008 (46.7%) | |
I.A. | 5,404 (53.8%) | 2,293 (53.3%) | |
Type of surgery (n, %) | 0.994 | ||
Elective | 8,592 (85.6%) | 3,682 (85.6%) | |
Emergency | 1,445 (14.4%) | 619 (14.4%) | |
Intraoperative blood loss (ml) | 0.634 | ||
< 1000 | 9,309 (92.7%) | 3,997 (92.9%) | |
1000–2000 | 444 (4.4%) | 190 (4.4%) | |
2000–3000 | 180 (1.8%) | 65 (1.5%) | |
> 3000 | 104 (1.0%) | 49 (1.1%) | |