Table 1.
Risk factors for latent tuberculosis detected via IGRA among healthcare workers: univariate analysis.
| Variable | No. (%) | P-value | |
|---|---|---|---|
| IGRA positive (n = 271) | IGRA negative (n = 1384) | ||
| Sex | |||
| Male | 101 (24) | 322 (76) | <0.001 |
| Female | 170 (14) | 1062 (86) | |
| Age group, y | |||
| ≤29 | 35 (6) | 587 (94) | <0.001 |
| 30–39 | 69 (15) | 403 (85) | |
| 40–49 | 101 (25) | 297 (75) | |
| ≥50 | 66 (41) | 97 (60) | |
| Professions | |||
| Physician | 38 (24) | 120 (76) | <0.001 |
| Nurse | 94 (12) | 683 (88) | |
| Technician | 41 (20) | 169 (80) | |
| Housekeeping staff/Auxiliary | 73 (22) | 258 (78) | |
| Administration staff | 24 (15) | 131 (85) | |
| Pharmacist | 1 (4) | 23 (96) | |
| Work duration, yr | |||
| ≤1 | 46 (13) | 318 (87) | <0.001 |
| >1 to ≤5 | 65 (12) | 468 (88) | |
| >5 to ≤10 | 31 (13) | 205 (87) | |
| >10 | 129 (25) | 393 (75) | |
| BCG vaccination | |||
| No | 43 (17) | 210 (83) | 0.824 |
| Yes | 179 (17) | 902 (83) | |
| Unknown | 49 (15) | 272 (85) | |
| Smoking | |||
| No | 219 (15) | 1236 (85) | <0.001 |
| Yes | 52 (26) | 148 (74) | |
| Diabetes | |||
| No | 263 (16) | 1376 (84) | <0.001 |
| Yes | 4 | 8 (50) | |
| Autoimmune disease | |||
| No | 269 (16) | 1375 (84) | 0.871 |
| Yes | 2 (18) | 9 (82) | |
| Malignancy | |||
| No | 268 (16) | 1377 (84) | 0.243 |
| Yes | 3 (30) | 7 (70) | |
| Contact active tuberculosis patients | |||
| No | 181 (15) | 996 (85) | 0.086 |
| Yes | 90 (19) | 388 (81) | |
| Work in risk area | |||
| No | 189 (15) | 1052 (85) | 0.029 |
| Yes | 82 (20) | 332 (80) | |
IGRA; interferon-γ release assay.