Table 1 Population demographics
|  | PTST- (N,% of PTST-) | TSTC (N,% of TSTC) | TST + (N,% of TST+) | Total | Comparison across 3 groups | Comparison of PTST- vs. TSTC + TST+ | Comparison of PTST- and TSTC vs. TST+ |
|---|---|---|---|---|---|---|---|
Age at baseline (years) | Â | Â | Â | Â | |||
2Â years or less | 19 (13.4%) | 22 (13.1%) | 103(11.4%) | 144(11.9%) | Â | Â | Â |
>2 and equal to 5 | 27(19.0%) | 24(14.3%) | 93(10.3%) | 144(11.9%) | Â | Â | Â |
>5 or less than 15 | 65 (45.8%) | 47 (28.0%) | 237 (26.3%) | 349 (28.8%) | Â | Â | Â |
>15 | 31 (21.8%) | 75 (44.6%) | 467 (51.9%) | 573 (47.3%) | Â | Â | Â |
All | 142 | 168 | 900 | 1210 | < 0.0005* | <0.0005* | < 0.0005* |
Sex | Â | Â | |||||
Female | 73 (51.4%) | 98 (58.3%) | 488 (54.2%) | 659 (54.5%) | Â | Â | Â |
Male | 69 (48.6%) | 70 (41.7%) | 412 (45.8%) | 551 (45.5%) | Â | Â | Â |
All | 142 | 168 | 900 | 1210 | 0.456 | 0.437 | 0.775 |
HIV status | |||||||
Negative | 127 (91.4%) | 157 (96.9%) | 801 (92.5%) | 1085 (93%) | Â | Â | Â |
Positive | 12 (8.6%) | 5 (3.1%) | 65 (7.5%) | 82 (7.0%) | Â | Â | Â |
All | 139 | 162 | 866 | 1167 | 0.095 | 0.430 | 0.277 |
Presence of BCG scar | |||||||
No | 27 (19.0%) | 32 (19.0%) | 184 (20.4%) | 243 (20.1%) | Â | Â | Â |
Yes | 93 (65.5%) | 117 (69.6%) | 627 (69.7%) | 837 (69.2%) | Â | Â | Â |
Uncertain | 22 (15.5%) | 19 (11.3%) | 89 (9.9%) | 130 (10.7%) | Â | Â | Â |
All | 142 | 168 | 900 | 1210 | 0.381 | 0.151 | 0.254 |
PPD at baseline (mm) 1 | |||||||
Mean (SD) | 0.30 (1.153) | 1.87 (3.238) | 15.91 (3.605) | Â | N/A | N/A | N/A |