Table 3.
Age-adjusted and multivariate odds ratios (OR) and 95% confidence intervals (95% CI) of QFT-positivity according to potential risk factors among homeless persons and caregivers, after excluding the subjects with active TB disease or indeterminate QFT results.
| Homeless persons (n = 255) | Caregivers (n = 172) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| No. of subjects | No.(%) of QFT-positivity | Age-adjusted OR (95% CI) | MultivariateOR (95% CI)† | No. of subjects | No.(%) of QFT-positivity | Age-adjusted OR (95% CI) | MultivariateOR (95% CI)† | ||
| Sex | Male | 253 | 130 (51.4) | NA | NA | 79 | 20 (25.3) | 1.0 | 1.0 |
| Female | 2 | 0 (0.0) | NA | NA | 93 | 22 (23.7) | 0.95 (0.46-1.93) | 0.91 (0.39-2.11) | |
| Current smoker | No | 66 | 33 (50.0) | 1.0 | 1.0 | 106 | 27 (25.5) | 1.0 | 1.0 |
| Yes | 185 | 93 (50.3) | 1.19 (0.66-2.14) | 1.23 (0.63-2.40) | 63 | 13 (20.6) | 0.81 (0.38-1.75) | 0.72 (0.29-1.74) | |
| Current drinker | No | 121 | 56 (46.3) | 1.0 | 1.0 | 114 | 26 (22.8) | 1.0 | 1.0 |
| Yes | 129 | 70 (54.3) | 1.74 (1.02-2.96)* | 1.84 (1.01-3.37)* | 54 | 13 (24.1) | 1.23 (0.56-2.69) | 1.15 (0.48-2.74) | |
| Length of time spent living and/or working in the Airin district, year | <10 years | 107 | 38 (35.5) | 1.0 | 1.0 | 105 | 18 (17.1) | 1.0 | 1.0 |
| ≥10 years | 128 | 78 (60.9) | 2.52 (1.46-4.35)* | 2.53 (1.39-4.61)* | 63 | 24 (38.1) | 2.60 (1.24-5.42)* | 2.32 (1.05-5.13)* | |
| Past exposure to TB patients | No | 196 | 96 (49.0) | 1.0 | 1.0 | 138 | 27 (19.6) | 1.0 | 1.0 |
| Yes | 50 | 31 (62.0) | 2.05 (1.05-3.99)* | 1.51 (0.71-3.21) | 32 | 14 (43.8) | 3.63 (1.55-8.47)* | 3.21 (1.30-7.91)* | |
| Cough and/or sputum | No | 194 | 100 (51.6) | 1.0 | 1.0 | 166 | 42 (25.3) | NA | NA |
| Yes | 59 | 29 (49.2) | 0.91 (0.50-1.67) | 0.64 (0.32-1.32) | 6 | 0 (0.0) | NA | NA | |
| General fatigue | No | 207 | 102 (49.3) | 1.0 | 1.0 | 163 | 40 (24.5) | 1.0 | 1.0 |
| Yes | 46 | 27 (58.7) | 1.66 (0.84-3.29) | 1.47 (0.66-3.28) | 9 | 2 (22.2) | 0.96 (0.19-4.93) | 1.06 (0.19-5.96) | |
| Elevated body temperature | No | 244 | 124 (50.8) | NA | NA | 171 | 42 (24.6) | NA | NA |
| Yes | 9 | 5 (55.6) | NA | NA | 1 | 0 (0.0) | NA | NA | |
| Past history of TB | No | 225 | 109 (48.4) | 1.0 | 1.0 | 166 | 37 (22.3) | NA | NA |
| Yes | 30 | 21 (70.0) | 2.23 (0.95-5.21) | 1.51 (0.43-5.31) | 6 | 5 (83.3) | NA | NA | |
| Abnormal chest X-ray finding | No | 193 | 86 (44.6) | 1.0 | 1.0 | 165 | 37 (22.4) | NA | NA |
| Yes | 62 | 44 (71.0) | 2.62 (1.39-4.93)* | 1.90 (0.78-4.60) | 7 | 5 (71.4) | NA | NA | |
*p < 0.05
Abbreviations: TB, tuberculosis; NA, not applicable
†Multivariate-adjusted for the listed factors and age.