Table 2 Positive tuberculin skin test by induration size cut-off according to BCG scar status
From: Current tuberculin reactivity of schoolchildren in the Central African Republic
Cut-off point (mm) | All | Without BCG scar | BCG scar | BCG effect | ||||
|---|---|---|---|---|---|---|---|---|
n (%) | 95 % CI | n (%) | 95 % CI | n (%) | 95 % CI | ORa | 95 % CI | |
5 | 634 (23.4) | [21.6–25.3] | 182 (23.5) | [20.2–27.2] | 384 (25.6) | [23.1–28.3] | 1.1 | [0.9–1.4] |
10 | 499 (18.4) | [16.8–20.1] | 151 (19.5) | [16.5–22.9] | 293 (19.6) | [17.4–21.9] | 1.0 | [0.8–1–2] |
15 | 240 (8.9) | [7.8–10.0] | 84 (10.8) | [8.7–13.4] | 121 (8.1) | [6.7–9.6] | 0.7 | [0.5–1.0] |