Table 3. Power of Selected Variables for Predicting Pressure Ulcer Formation.
| Univariate analysis | Multivariate analysis | |||
|---|---|---|---|---|
| Odds ratio (95% CI) | P value | Odds ratio (95% CI) | P value | |
| Preoperative hemoglobin (g/dl) | 0.80 (0.66–0.97) | 0.020 | ||
| Preoperative albumin (g/dl) | 0.29 (0.16–0.53) | < 0.001 | 0.21 (0.05–0.82) | 0.025 |
| Preoperative lactate (mmol/L) | 1.73 (1.15–2.60) | 0.009 | 1.70 (1.07–2.71) | 0.026 |
| Blood loss (L) | 1.00 (1.00–1.00) | 0.048 | ||
| Packed RBC transfusion (units) | 1.07 (1.01–1.15) | 0.028 | 0.99 (1.92–1.06) | 0.772 |
| APACHE II score | 1.08 (1.03–1.15) | 0.005 | ||
| Braden scale | 0.75 (0.64–0.88) | < 0.001 | 0.88 (0.64–1.21) | 0.421 |
| Ventilator care | 6.92 (2.49–19.28) | < 0.001 | 0.14 (0.10–1.92) | 0.140 |
| Restraint | 8.88 (2.92–27.03) | < 0.001 | ||
RBC: red blood cells, APACHE: Acute Physiology and Chronic Health Evaluation, Ventilator care: postoperative ventilator care, Restraint: physical restraint used in intensive care unit.