| |
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)
| | | | |
|
2 years or less
|
19 (13.4%)
|
22 (13.1%)
|
103(11.4%)
|
144(11.9%)
| | | |
|
>2 and equal to 5
|
27(19.0%)
|
24(14.3%)
|
93(10.3%)
|
144(11.9%)
| | | |
|
>5 or less than 15
|
65 (45.8%)
|
47 (28.0%)
|
237 (26.3%)
|
349 (28.8%)
| | | |
|
>15
|
31 (21.8%)
|
75 (44.6%)
|
467 (51.9%)
|
573 (47.3%)
| | | |
|
All
|
142
|
168
|
900
|
1210
|
< 0.0005*
|
<0.0005*
|
< 0.0005*
|
|
Sex
| | |
|
Female
|
73 (51.4%)
|
98 (58.3%)
|
488 (54.2%)
|
659 (54.5%)
| | | |
|
Male
|
69 (48.6%)
|
70 (41.7%)
|
412 (45.8%)
|
551 (45.5%)
| | | |
|
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%)
| | | |
|
Positive
|
12 (8.6%)
|
5 (3.1%)
|
65 (7.5%)
|
82 (7.0%)
| | | |
|
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%)
| | | |
|
Yes
|
93 (65.5%)
|
117 (69.6%)
|
627 (69.7%)
|
837 (69.2%)
| | | |
|
Uncertain
|
22 (15.5%)
|
19 (11.3%)
|
89 (9.9%)
|
130 (10.7%)
| | | |
|
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)
| |
N/A
|
N/A
|
N/A
|
- PTST- = Persistently negative tuberculin skin test; TSTC = Tuberculin skin test converter; TST + = tuberculin skin test positive at baseline.
- *indicates P value that is significant after multiple testing correction.
-
1Statistical comparisons of these three groups must account for age group; see further detail in Additional file 1.
