Table 4.
Multivariate analyses for factors associated with intensive care unit admission (Forward logistic regression model)*
| Variables | Other cellulitis or abscess | Decubitus ulcer | Post-operation wound infection | Infection due to vascular device/implant | Gangrene | Necrotizing fasciitis |
|---|---|---|---|---|---|---|
| Age ≥65 yr | 1.88(1.40-2.52) | 2.43(1.75-3.39) | ||||
| Surgical conditions | 5.49(4.04-7.45) | 2.46(1.75-3.46) | 13.38(7.73-23.17) | 2.54(1.40-4.62) | ||
| Hospital level | ||||||
| Medical center | 1 | 1 | 1 | |||
| Regional hospital | 0.90(0.65-1.24) | 1.54(1.06-2.24) | 0.38(0.21-0.69) | |||
| District hospital | 0.56(0.38-0.83) | 0.95(0.65-1.40) | 0.25(0.10-0.61) | |||
| Comorbid conditions | ||||||
| Congestive heart failure | 5.01(3.09-8.11) | 1.89(1.13-3.19) | 4.07(1.03-16.18) | 4.07(1.50-11.06) | 4.33(1.78-10.56) | |
| Cerebrovascular disease | 3.25(2.01-5.27) | 4.67(2.10-10.36) | ||||
| End stage renal disease | 0.27(0.14-0.53) | |||||
| Cirrhosis | 3.42(2.00-5.85) | 35.81(3.77-340.61) | 4.28(1.46-12.51) | |||
| Cancer | 1.95(1.17-3.25) | 2.61(1.78-3.82) | 0.17(0.08-0.38) | 5.35(1.42-20.16) | ||
| Infections other than SST | 4.51(3.40-5.99) | 3.27(2.39-4.49) | 2.86(2.04-4.02) | 2.61(1.52-4.50) | 5.01(2.96-8.49) | 4.02(2.33-6.95) |
| P-value for goodness-of-fit | 0.081 | 0.970 | 0.375 | 0.846 | 0.374 | 0.542 |
| Nagelkerke pseudo-R2 | 0.202 | 0.107 | 0.314 | 0.200 | 0.179 | 0.242 |
*Values represent adjusted odds ratio (95% confidence interval). Factors used for multivariate analyses included age ≥65 year, gender, medical/surgical conditions, hospital levels, comorbid conditions and infections other than skin/soft tissue (SST).