Non-compliance with different phases of the tuberculin skin test among healthcare students from Salvador, Bahia, Brazil, 2004–2008
| Study population | First application, n/N (%) | First reading, n/N (%) | Second application, n/N (%) | Second reading, n/N (%) |
| Course | ||||
| Medicine | 0/626 (0) | 86/626 (13.7) | 170/352 (48.3) | 14/182 (7.7) |
| Physiotherapy | 2/130 (1.5) | 14/128 (10.9) | 13/75 (17.3) | 15/62 (24.2) |
| Nursing | 4/133 (3.0) | 30/129 (23.3) | 27/63 (42.9) | 3/36 (8.3) |
| Pharmacy | 0/132 (0) | 14/132 (10.6) | 22/81 (27.2) | 4/59 (6.8) |
| Nutrition | 0/72 (0) | 7/72 (9.7) | 21/46 (45.7) | 3/25 (12.0) |
| Phonoaudiology | 0/43 (0) | 6/43 (14.0) | 12/22 (54.5) | 1/10 (10.0) |
| Dentistry | 1/28 (3.6) | 1/27 (3.7) | 5/16 (31.3) | 4/11 (36.4) |
| University | ||||
| Public | 5/564 (0.9) | 97/559 (17.4) | 138/318 (43.4) | 25/180 (13.9) |
| Private | 2/600 (0.3) | 61/598 (10.2) | 132/337 (39.2) | 19/205 (9.3) |
| Age (years) | ||||
| ≤Median (19 years) | 1/621 (0.2) | 75/620 (12.1) | 132/349 (37.8) | 27/217 (12.4) |
| >Median (19 years) | 6/542 (1.1) | 83/538 (15.4) | 138/306 (45.1) | 17/168 (10.1) |
| Unknown or no answer | 0/1 (0) | 0/0 (0) | 0/0 (0) | 0/0 (0) |
| Gender | ||||
| Male | 0/422 (0) | 71/422 (16.8) | 99/207 (47.8) | 17/108 (15.7) |
| Female | 7/742 (0.9) | 87/735 (11.8) | 171/448 (38.2) | 27/277 (9.7) |
| Family income (in MW*) | ||||
| ≤5 | 1/217 (0.5) | 24/216 (11.1) | 47/129 (36.4) | 7/82 (8.5) |
| >5 | 5/903 (0.6) | 128/898 (14.3) | 209/502 (41.6) | 35/293 (11.9) |
| Unknown or no answer | 1/44 (2.3) | 6/43 (14.0) | 14/24 (58.3) | 2/10 (20.0) |
| BCG vaccination | ||||
| Yes | 5/874 (0.6) | 121/869 (13.9) | 200/484 (41.3) | 31/284 (10.9) |
| No | 0/33 (0) | 5/33 (15.1) | 16/22 (72.7) | 2/6 (33.3) |
| Unknown or no answer | 2/257 (0.8) | 32/255 (12.5) | 54/149 (36.2) | 11/95 (11.6) |
| Known contact with a patient with tuberculosis | ||||
| Yes | ||||
| Close contact (family or household) | 0/66 (0) | 15/66 (22.7) | 14/32 (43.8) | 2/18 (11.1) |
| Other | 0/59 (0) | 7/59 (11.9) | 18/32 (56.2) | 2/14 (14.3) |
| No | 7/1017 (0.7) | 134/1010 (13.3) | 232/578 (40.1) | 39/346 (11.3) |
| Unknown or no answer | 0/22 (0) | 2/22 (9.1) | 6/13 (46.2) | 1/7 (14.3) |
| Previous diagnosis of tuberculosis | ||||
| Yes | 0/1 (0) | 0/1 (0) | 0/0 (0) | 0/0 (0) |
| No | 7/1151 (0.6) | 158/1144 (13.8) | 265/646 (41.0) | 44/381 (11.5) |
| Unknown or no answer | 0/12 (0) | 0/12 (0) | 5/9 (55.6) | 0/4 (0) |
↵* MW, minimum wage (>5 corresponds to the top half of the economic classification system adopted by Brazilian government agencies17).