Table 3.
Univariate and multivariate logistic regression analysis for identifying independent risk factors for mortality in the intensive care unit
| Variables |
Univariate |
P |
Multivariate |
P | ||
| OR | 95%CI | OR | 95%CI | |||
| Age (yr) | 1.02 | 0.96-1.08 | 0.491 | |||
| Gender (male) | 1.12 | 0.17-7.24 | 0.901 | |||
| APACHE II score | 1.07 | 0.92-1.25 | 0.345 | |||
| SOFA score | 1.23 | 0.82-1.84 | 0.308 | |||
| Length of stay in hospital wards before ICU admission (d) | 0.76 | 0.51-1.12 | 0.171 | |||
| Duration of vasopressors (d) | 1.18 | 0.95-1.48 | 0.129 | |||
| Blood lactate level (mmol/L) | 2.59 | 1.04-6.43 | 0.04 | 2.59 | 1.04-6.43 | 0.04 |
| Number of organ dysfunction (≥ 4) | 15.00 | 1.58-142.1 | 0.018 | |||
| Creatinine (μmol/L) | 1.03 | 1.004-1.064 | 0.024 | |||
| Total bilirubin (μmol/L) | 1.02 | 0.95-1.10 | 0.449 | |||
| Albumin g/L | 1.06 | 0.89-1.27 | 0.494 | |||
| Platelets (× 109/L) | 0.99 | 0.98-1.00 | 0.295 | |||
| Absolute neutrophil count/μL | 1.04 | 0.92-1.17 | 0.459 | |||
| Absolute lymphocytes count/μL | 1.03 | 0.93-1.15 | 0.479 | |||
Goodness-of-fit (Hosmer-Lemeshow) χ2 = 4.42, P = 0.817, AUC = 0.88 (0.74-0.99), P = 0.006. APACHE: Acute Physiology and Chronic Health Evaluation, ICU: Intensive care unit; OR: Odds ratio; CI: Confidence interval; AUC: Area under receiver operator characteristic curve.