Table 1 Baseline characteristics of subjects with and without tuberculin test (TST) conversion
From: Can workplaces be predictors for recent onset latent tuberculosis in health care workers?
Variables | No conversion N = 461 | Conversion N = 163 | p value |
|---|---|---|---|
Baseline characteristics | |||
Median age (range), years | 39 (19–58) | 39 (17–59) | 0.9972 |
Male gender | 95 (20.6) | 40 (24.5) | 0.2946 |
Median duration of employment, years | 14 (2–31) | 13 (2–27) | 0.9302 |
Working unit | 0.007 | ||
Office | 235 (51.0) | 56 (34.4) | |
Inpatient unit | 93 (20.2) | 50 (30.7) | |
Outpatient unit | 56 (12.2) | 28 (17.2) | |
Critical care unit | 20 (4.3) | 7 (4.3) | |
Operating room | 39 (8.5) | 13 (8.0) | |
Laboratory unit | 18 (3.9) | 9 (5.5) | |
Tuberculosis related variables | |||
BCG scar | 284 (61.1) | 102 (62.6) | 0.8263 |
History of tuberculosis in family | 27 (5.9) | 19 (9.9) | 0.0825 |
Years of tuberculosis in family, years | 8.5 (0.5–36) | 8 (0.5–30) | 0.8392 |
History of tuberculosis in colleagues | 32 (6.9) | 9 (5.6) | 0.5406 |
History tuberculosis exposure in the past year | 74 (16.1) | 52 (32.1) | <0.001 |
History of previous TST | 162 (35.2) | 68 (41.7) | 0.1395 |
Prevention related variables | |||
History of prevention by any methods | 170 (37.0) | 80 (49.4) | 0.0055 |
History of surgical mask use | 176 (38.3) | 88 (54.3) | 0.0004 |
History of N95 use | 7 (33.3) | 8 (32.0) | 0.9235 |
History of hepa use | 1 (16.7) | 3 (33.3) | 0.6044 |
Frequency of surgical mask use at all time | 66 (39.1) | 37 (45.7) | 0.3192 |