TABLE 3.
Prevalence comparison of SCGs between M. tuberculosis strains causing PTB
| SCG | Prevalence by patient age and group (no. of patients [%])a |
|||||
|---|---|---|---|---|---|---|
| PTB patients (n = 1,269) |
HIV-negative adult PTB patients (n = 843) |
|||||
| Born after 1953 (n = 873) | Born before 1953 (n = 396) | Odds ratio (95% CI) | Born after 1953 (n = 662) | Born before 1953 (n = 181) | Odds ratio (95% CI) | |
| 1 | 292 (33.4) | 218 (55.1) | 0.4 (0.3–0.5) | 191 (28.9) | 89 (49.2) | 0.4 (0.3–0.6) |
| 2 | 415 (47.5) | 138 (34.8) | 1.7 (1.3–2.2) | 331 (50.0) | 70 (38.7) | 1.6 (1.1–2.2) |
| 5 | 128 (14.7) | 28 (7.1) | 2.3 (1.5–3.5) | 112 (16.9) | 16 (8.8) | 2.1 (1.2–3.6) |
| Otherb | 38 (4.4) | 12 (3.0) | 1.5 (0.8–2.8) | 28 (4.2) | 6 (3.3) | 1.3 (0.5–3.2) |
a
Prevalence was determined by the number of patients (%) positive for the SCG.
b
Other, SCGs 3a, 3b, 3c, 4, and 6a.