TABLE 4.
Multivariable logistic regression analysis of risk factors associated with clinical failure in the 190 patients with MRSA bacteremiaa
| Independent variable | Multivariate logistic regression analysis without variable selection |
Multivariate logistic regression with backward variable selection based on LR |
||
|---|---|---|---|---|
| OR (95% CI for OR) | P | OR (95% CI for OR) | P | |
| Antibiotic type (vancomycin) | 0.73 (0.18, 2.98) | 0.666 | ||
| Trauma (yes) | 7.38 (0.85, 63.77) | 0.069 | ||
| Renal disease (yes) | 1.62 (0.39, 6.76) | 0.509 | ||
| Hepatic disease (yes) | 1.09 (0.12, 10.21) | 0.939 | ||
| Pneumonia (yes) | 1.94 (0.43, 8.78) | 0.391 | ||
| Pitt's bacteremia score | 1.60 (1.13, 2.26) | 0.008 | 1.51 (1.10, 2.06) | 0.010 |
| C-reactive protein | 1.00 (0.99, 1.02) | 0.740 | ||
| Acute renal injury (yes) | 18.41 (1.76, 192.26) | 0.015 | 15.99 (1.81, 141.16) | 0.013 |
| Duration of fever (days) | 1.78 (1.34, 2.37) | <0.001 | 1.77 (1.36, 2.32) | <0.001 |
| Duration of bacteremia (days) | 1.83 (1.34, 2.48) | <0.001 | 1.76 (1.34, 2.31) | <0.001 |
a
LR, Logistic regression analysis; OR, odds ratio; 95% CI, 95% confidence interval.