Table 3. Odds ratios from final logistic regression model of variables correlated with TB from Mycobacterium bovis versus M. tuberculosis, San Diego County, California, 2001–2005*.
| Risk factors |
M. bovis vs. M. tuberculosis
(n = 130 vs. n = 1,186) |
|
|---|---|---|
| OR (95% CI) | p value | |
| Age group, y (ref >65 y) | 0.002 | |
| 0–4 | 2.43 (0.81–7.28) | 0.11 |
| 5–14 | 4.38 (1.38–13.9) | 0.01 |
| 15–24 | 1.06 (0.45–2.49) | 0.90 |
| 25–44 | 0.68 (0.31–1.45) | 0.32 |
| 45–64 |
0.50 (0.21–1.15) |
0.10 |
| Race/ethnicity (ref = white) | <0.001 | |
| Hispanic | 7.97 (2.36–26.93) | <0.001 |
| Asian | 0.08 (0.01–0.76) | 0.03 |
| Black | 0 | 0.99 |
| Other |
0 |
0.99 |
| Extrapulmonary disease | 4.51 (2.36–8.62) | <0.001 |
| Normal chest radiograph results | 3.16 (1.63–6.11) | <0.001 |
| Multisite disease |
4.31 (2.54–7.3) |
<0.001 |
| HIV status† (ref = negative) | 0.13 | |
| Positive | 1.75 (0.93–3.29) | 0.08 |
| Unknown | 0.87 (0.48–1.58) | 0.65 |
*n = 1,316. TB, tuberculosis; OR, odds ratio; CI, confidence interval; ref, referent. †Variable not significant in multivariate analysis.