Table 1.
Comparison of demographic and treatment factors between culture-negative and -positive patients
| Variable | Culture-positive (n = 250 patients) | Culture-negative (n = 48 patients) | p value |
|---|---|---|---|
| Age (years) | 66.7 (95% CI; 65.3–68.2) | 63.7 (95% CI; 60.0–67.3) | 0.106 |
| Sex | 0.197 | ||
| Male | 122 | 19 | |
| Female | 128 | 29 | |
| Body mass index (kg/m2) | 32.0 (95% CI, 30.7–33.3) | 31.8 (95% CI, 28.9–34.6) | 0.887 |
| Charlson Comorbidity Index | 2.5 (95% CI, 2.3–2.7) | 2.1 (95% CI, 1.7–2.5) | 0.079 |
| Time to initial treatment (months) | 30.0 (95% CI, 24.7–35.4) | 30.8 (95% CI, 13.6– 47.7) | 0.957 |
CI = confidence interval.