Table 1 Occupational characteristics of healthcare workers included in the cohort analysis (n = 2182), and distribution of tuberculin skin testing conversions (n = 148) and of person‐years at risk (n = 8947).
| Occupational characteristics | n (%) | TST conversions, n | Person‐ years at risk |
|---|---|---|---|
| At least one change of occupation or workplace | 258 (11.8) | 10 | 712 |
| Working in hospital setting | 1532 (70.2) | 117 | 6061 |
| Occupation (work activity) | |||
| Clerical | 93 (4.3) | 3 | 284 |
| Medical | 567 (26.0) | 43 | 2200 |
| Nursing | 1412 (64.7) | 99 | 5566 |
| Social | 110 (5.0) | 3 | 447 |
| Workplace | |||
| Laboratory | 149 (6.8) | 20 | 539 |
| Administrative | 112 (5.1) | 2 | 375 |
| Outpatient | 692 (31.7) | 38 | 2661 |
| Surgery | 367 (16.8) | 36 | 1538 |
| Medicine | 748 (34.3) | 39 | 2938 |
| Infectious disease | 114 (5.2) | 13 | 446 |
| Duration of employment (⩾1 years) | 2155 (98.8) | 1 | 100 |
TST, tuberculin skin testing.