Table 1. Demographics and clinical characteristics of surgical intensive care unit patients.
| Variable | OSICU group (n = 191) | CSICU group (n = 560) | p |
|---|---|---|---|
| Male (%) | 106 (55.5) | 279 (49.8) | 0.175 |
| Age (years) | 67.3 ± 16.10 | 72.2 ± 15.01 | < 0.05 |
| BMI (kg/m2) | 26.57 ± 34.174 | 23.49 ± 4.856 | 0.219 |
| APACHE II score | 17.4 ± 7.97 | 21.8 ± 7.65 | < 0.05 |
| SOFA score | 2.0 ± 2.29 | 4.1 ± 3.06 | < 0.05 |
| Comorbidities (%) | |||
| Hypertension | 104 (54.5) | 316 (56.4) | 0.634 |
| Diabetes mellitus | 68 (35.6) | 173 (30.9) | 0.229 |
| Heart disease | 26 (13.6) | 80 (14.3) | 0.818 |
| Lung disease | 3 (1.6) | 4 (0.7) | 0.288 |
| Liver disease | 0 (0) | 0 (0) | |
| Kidney disease | 5 (2.6) | 12 (2.1) | 0.703 |
| Brain disease | 0 (0) | 30 (5.4) | < 0.05 |
| Malignant disease | 10 (5.2) | 90 (16.1) | < 0.05 |
| Social history (%) | |||
| Alcohol history | 47 (24.6) | 90 (16.1) | < 0.05 |
| Smoking history | 56 (29.3) | 88 (15.7) | < 0.05 |
| Sepsis or septic shock (%) | 15 (7.9) | 70 (12.5%) | 0.080 |
| Postoperative ICU admission (n = 636, %) | 158 (93.5) | 448 (95.9) | 0.200 |
| General Surgery (%) | 123 (72.8) | 326 (69.8%) | < 0.05 |
| Orthopedic Surgery (%) | 22 (13.0) | 100 (21.4%) | |
| Urology (%) | 6 (3.6) | 24 (5.1) | |
| Obstetrics and Gynecology (%) | 7 (4.1) | 11 (2.4) | |
| Plastic Surgery (%) | 10 (5.9) | 6 (1.3) | |
| Oral and Maxillofacial Surgery (%) | 1 (0.6) | 0 (0) |
OSICU, open surgical intensive care unit; CSICU, closed surgical intensive care unit; BMI, body mass index; APACHE II, acute physiology, and chronic health evaluation II; SOFA, sequential organ failure assessment; CRRT, continuous renal replacement therapy; ICU, intensive care unit