Table 2 Prevalence of latent tuberculosis infection (LTBI) in the study population following the cross-sectional study
Variables | Cases | Controls | OR 95% CI | P value |
|---|---|---|---|---|
n = 50 (%) | n = 152 (%) | |||
Age (years) (Mean ± SD) | 38.0 ± 16.9 | 34.8 ± 14.3 | 1.02 (0.99-1.04) | 0.151 |
Male | 35(70) | 77 (50.7) | 2.27 (1.15-4.50) | 0.019 |
Foreign-born | 22 (44) | 61 (40.1) | 1.17 (0.61-2.24) | 0.630 |
BCG vaccinated | 24 (48) | 74 (48.7) | 0.97 (0.51-1.84) | 0.933 |
Use vitamin D supplements1 | 6 (13.6) | 27 (18.0) | 0.72 (0.28-1.87) | 0.500 |
Ever smoking2 | 20 (46.5) | 54 (38.3) | 1.40 (0.70-2.79) | 0.337 |
BMI3(Mean ± SD) | 25.7 ± 4.7 | 25.6 ± 6.3 | 1.03 (0.97-1.11) | 0.315 |
Sputum AFB-positive index cases | 43 (86) | 112 (73.7) | 2.19 (0.91-5.27) | 0.079 |
Exposure to TB patient | ||||
High | 28 (52) | 36 (23.7) | 7.58 (2.42-23.74) | 0.001 |
Medium | 18 (40) | 77 (50.6) | 2.28 (0.72-7.02) | 0.160 |
Low | 4 (8) | 39 (25.7) | 1.00 | |
Trend | 0.000 | |||
High exposure and sputum AFB-positive index cases | 23(46) | 17 (11.2) | 6.76 (3.19-14.33) | 0.000 |
Study period Apr-Sept | 32 (64) | 98 (64.5) | 0.98 (0.50-1.91) | 0.952 |
25 (OH)Vitamin D3 ng/ml (Mean ± SD) | 22.9 ± 11.0 | 24.0 ± 14.1 | 0.8754 | |
25 (OH)Vitamin D3 ng/ml(Mean ± SD) Oct-March period | 17.9 ± 7.0 | 18.2 ± 8.0 | 0.8004 | |
25 (OH)Vitamin D3 ng/ml(Mean ± SD) Apr-Sept period | 25.7 ± 11.9 | 27.2 ± 15.7 | 0.9574 | |
25(OH) Vitamin D3 ≥ 30 ng/ml | 9 (18) | 32 (21.1) | 0.82 (0.36-1.87) | 0.642 |
25 (OH)Vitamin D3 levels | ||||
0-19 ng/ml | 22 (44) | 67 (44.1) | 1.00 | |
20-29 ng/ml | 19 (38) | 53 (34.9) | 1.09 (0.54-2.22) | |
30 ≥ ng/ml | 9 (18) | 32 (21.1) | 0.86 (0.35-2.07) | |
Trend | 0.812 |