Table 4 Incidence of tuberculin skin tests (TST) conversion following the case-control study
Variables | Cases | Controls | OR 95% CI | P value |
|---|---|---|---|---|
N = 11(%) | N = 82 (%) | |||
Age (years) (Mean ± SD) | 39.6 ± 13.1 | 34.7 ± 14.5 | 1.02 (0.98-1.07) | 0.299 |
Male | 8 (72.7) | 41 (50.0) | 2.07 (0.66-10.72) | 0.168 |
Foreign-born | 5 (45.5) | 26 (31.7) | 1.79 (0.50-6.42) | 0.363 |
BCG vaccinated | 5 (45.5) | 40 (48.8) | 0.88 (0.25-3.10) | 0.886 |
Use vitamin D supplements | 3 (27.3) | 20 (24.7)1 | 1.14 (0.28-4.73) | 0.853 |
Ever smoking | 6 (54.5) | 30 (38.5)2 | 1.96 (0.55-6.98) | 0.299 |
BMI(Mean ± SD)3 | 25.4 ± 4.6 | 26.0 ± 6.4 | 0.98 (0.88-1.10) | 0.749 |
Contact sputum AFB-positive index cases | 10 (90.9) | 65 (79.3) | 2.62 (0.31-21.87) | 0.375 |
Exposure to TB patient | ||||
High | 5 (45.5) | 14 (17.1) | 9.16 (1.14-∞) | 0.035 |
Medium | 6 (54.5) | 47 (57.3) | 3.51 (0.49-∞) | 0.248 |
Low | 0 (0.0) | 21 (25.6) | 1.00 | |
Trend | 0.014 | |||
High exposure and sputum AFB positive index cases | 5 (45.5) | 6 (7.3) | 10.56(2.48-44.95) | 0.001 |
Study period Apr-Sept | 6 (54.5%) | 61 (74.4) | 0.41 (0.11-1.50) | 0.178 |
25 (OH)Vitamin D3 (ng/ml) (Mean ± SD) | 17.5 ± 5.6 | 25.9 ± 13.7 | 0.0414 | |
25 (OH) Vitamin D3 ng/ml (Mean ± SD) Oct-March period | 15.3 ± 7.4 | 20.0 ± 9.3 | 0.2424 | |
25 (OH) Vitamin D3 ng/ml (Mean ± SD) Apr-Sept period | 19.4 ± 2.9 | 27.9 ± 14.4 | 0.1444 | |
25 (OH) Vitamin D3 ≥ 30 ng/ml | 0 (0) | 25 (30.5) | 0.15 (0.00-1.00) | 0.0505 |
25 (OH) Vitamin D3 levels | ||||
0-19 ng/ml | 7 (63.6) | 29 (35.4) | 1.00 | |
20-29 ng/ml | 4 (36.4) | 28 (34.1) | 0.60 (0.12-2.66) | 0.660 |
≥ 30 ng/ml | 0 (0.0) | 25 (30.5) | 0.13 (0.00-0.91) | 0.038 |
Trend | 0.034 |