Table 1. Characteristics of 720 TB case contacts and community controls by sleeping exposure category.
| Characteristic | Same room | Different room | Different house | Community | All |
| (n = 135) | (n = 282) | (n = 198) | (n = 105) | (n = 720) | |
| Age (years) | |||||
| Mean (median: range) | 19.4 (20:1–60) | 20.3 (16:1–100) | 20.9 (18:1–66) | 26.8 (25:1–65) | 21.3 (19:0–100) |
| % (n) Male | 53 (71) | 40 (112) | 49 (98) | 42 (44) | 45 (325) |
| BCG scar %(n)a | 45 (61) | 46 (129) | 36 (70) | 59 (61) | 45 (321) |
| HIV positive %(n/total)b | 3.7 (5/134) | 2.5 (7/280) | 2.0 (4/197) | 1.9 (2/103) | 2.2 (16/714) |
a
95 volunteers had uncertain BCG scar status
b
6 volunteers did not have an HIV test result