Table 1.
Patient characteristics at the time of intensive care unit presentation described using APACHE II, SAPS II, and the new models
| Variable | Nonsurvivors (n = 1031) | Survivors (n = 2590) | Availability n (%) |
|---|---|---|---|
| Body temperature (°C)AII, SII | 37 (0.73) | 37 (0.75) | 3533 (91.6) |
| Heart rateAII, SII | 109 (24) | 100 (24) | 3419 (88.7) |
| Age (years), median (range)AII, SII | 54 (16–102) | 56 (16–103) | 3509 (91) |
| Respiratory rateM1, M2, M3, AII | 24 (8) | 23 (6) | 2733 (70.9) |
| Systolic blood pressure (mmHg)M1, M2, AII, SII | 132 (35) | 139 (29) | 2828 (73.4) |
| Diastolic blood pressure (mmHg)AII, SII | 75 (19) | 79 (16) | 3527 (91.5) |
| Glasgow Coma Score, median (range)M1, M2, M3, AII, SII | 9 (2–15) | 15 (2–15) | 3372 (87.5) |
| PaO2 (mmHg) median (range)AII, SII | 150 (1.4–242) | 150 (0.4–267) | 423 (11) |
| pHAII | 7.3 (0.15) | 7.4 (0.13) | 512 (13.3) |
| WBCAII, SII | 21.3 (27.2) | 18.6 (23.8) | 2228 (57.8) |
| PCV %AII | 34.7 (8.5) | 35.8 (7) | 463 (12) |
| Serum creatinine (mg/dL) median (range)AII | 1.4 (0.3–11.3) | 1.2 (0.4–18) | 496 (12.9) |
| Potassium (mEq/L)AII, SII | 4.2 (1.04) | 4.1 (0.77) | 2774 (72) |
| Sodium (mEq/L)AII, SII | 137.7 (8.9) | 137.1 (6.9) | 2785 (72.2) |
| Blood urea nitrogen (mg/dL) median (range)M1, M2, SII | 59 (0.6–411) | 32 (0.9–672) | 1936 (50.2) |
| Haemoglobin (g/dL)M1, M2 | 10.8 (2.8) | 11.6 (2.4) | 1869 (48.5) |
| Vasopressor use count (%)M1 | 572 (64.34) | 1860 (91.31) | 2951 (76.5) |
| Mechanical ventilation count (%)M1, SII | 899 (87) | 2054 (79) | 2978 (77.3) |
| FiO2, median (range)AII, SII | 35 (21–100) | 21 (21–100) | 2323 (60.3) |
| Urine output, median (range)SII | 1150 (0–7400) | 1300 (0–12000) | 2469 (64) |
| Bicarbonate (mEq/L)SII | 22.3(5.4) | 22.5 (6.5) | 361 (9.4) |
| Bilirubin (mg/dL) median (range)SII | 1.1 (0.1–39) | 0.7 (0.1–56) | 1272 (33) |
Values for nonsurvivors and survivors are given as mean (standard deviation) unless otherwise stated
Availability is described for the whole population
AII Acute Physiology and Chronic Health Evaluation (APACHE) II, FiO 2 fraction of inspired oxygen, M1 model 1, M2 model 2, M3 model 3, PaO 2 partial pressure of oxygen, PCV packed cell volume, SII Simplified Acute Physiology Score (SAPS) II, WBC white blood cells