Table 2.
Multivariate analysis of factors associated with culture positivity in patients with PVOa
| Factor | Adjusted OR (95% CI) | P value |
|---|---|---|
| L-spine involved | 0.27 (0.04–1.80) | 0.177 |
| Paravertebral abscess | 5.91 (1.49–23.4) | 0.011 |
| Duration of antibiotic exposure | ||
| Noneb | 1.00 | |
| 1–3 days | 0.09 (0.01–1.49) | 0.092 |
| 4 or more days | 0.05 (0.01–0.24) | <0.001 |
| WBC (1,000/mm3) | 1.06 (0.88–1.29) | 0.518 |
| PMN (%) | 1.02 (0.96–1.09) | 0.471 |
| CRP (mg/dl) | 1.07 (0.95–1.21) | 0.267 |
a
PVO, pyogenic vertebral osteomyelitis; WBC, white blood cell counts; PMN, polymorphonuclear leukocytes; CRP, C-reactive protein; OR, odds ratio; CI, confidence interval, L-spine, lumbar spine.
b
Not exposed to antibiotics.