Table 1. Baseline characteristics stratified by TST status. TST tuberculin skin; N sample size; IGRA interferon gamma release assay; TB tuberculosis.
| Characteristics | TST Negative N (%) | TST Positive N (%) | Total N (%) | |
| Sex | Female | 130 (86.7) | 139 (83.2) | 269 (84.9) |
| Male | 20 (13.3) | 28 (16.7) | 48 (15.1) | |
| IGRA | Negative | 62 (42.2) | 23 (14.0) | 85 (27.2) |
| Positive | 68 (46.3) | 122 (73.9) | 190 (60.9) | |
| Indeterminate | 17 (11.5) | 20 (12.1) | 37 (11.9) | |
| Smoker | No | 131 (87.3) | 144 (86.8) | 275 (87.0) |
| Yes | 19 (12.7) | 22 (13.2) | 41 (13.0) | |
| Recent TB contact | No | 128 (85.9) | 121 (74.7) | 249 (80.1) |
| Yes | 21 (14.1) | 41 (25.3) | 62 (19.9) | |
| Previous TB | No | 123 (82.6) | 146 (87.4) | 269 (85.1) |
| Yes | 26 (17.4) | 21 (12.6) | 47 (14.9) | |
| BCG Scar | No | 61 (41.2) | 82 (49.1) | 143 (45.4) |
| Yes | 87 (58.8) | 85 (50.9) | 172 (54.6) | |
| Employed | No | 106 (70.7) | 105 (63.3) | 211 (66.8) |
| Yes | 44 (29.3) | 61 (36.7) | 105 (33.2) | |
| Accommodation | Shack | 99 (66.4) | 90 (57.0) | 189 (61.6) |
| House | 50 (33.6) | 68 (43.0) | 118 (38.4) | |
| Time resident in Khayelitsha | <1 year | 7 (4.7) | 12 (7.6) | 19 (6.2) |
| > = 1 year | 141 (95.3) | 145 (92.4) | 286 (93.8) | |
| On Antiretroviral therapy | No | 148 (99.3) | 163 (98.2) | 311 (98.7) |
| Yes | 1 (0.7) | 3 (1.8) | 4 (1.3) | |
| Characteristics | Median (IQR) | Median (IQR) | Median (IQR) | |
| Age (years) | 30.6 | 31.6 | 31 | |
| (27.5–36.9) | (26.8–37.5) | (26.8–37.5) | ||
| Body Mass Index (kg/m2) | 27.9 | 26.6 | 26.8 | |
| (23.3–31.6) | (22.6–31.3) | (22.9–31.4) | ||
| Education | Highest school grade achieved | 11 (10–11) | 11 (9–12) | 11 (9–12) |
| Number of persons/bedroom | 2 (1.67–3) | 2 (1.67–3) | 2 (1.67–3) | |
| CD4 count (cells/mm3) | 337 | 362 | 345 | |
| (226–476.5) | (253–519) | (241–504) | ||
| Number of days since HIV diagnosis | 410.5 | 337 | 351 | |
| (12–1474) | (25–1316) | (19–1402) |