Table III.
Crude and adjusted hazard risks for recent tuberculin skin test conversion after the implementation of administrative M. tuberculosis infection control measures (2002–2003)
| Characteristics | Crude risk (95% CI) | Adjusted riska (95% CI) |
|---|---|---|
| Overall | ||
| 1998–2001 | 1 | 1 |
| 2002–2003 | 0.46 (0.23–0.89) | 0.24 (0.10–0.54) |
| Sex | ||
| Male | 1 | 1 |
| Female | 1.26 (0.63–2.53) | 1.17 (0.53–2.56) |
| Occupation | ||
| Administrative clerk | 1 | 1 |
| Physician | 1.90 (0.60–6.04) | 1.85 (0.49–6.99) |
| Nurse | 2.52 (1.05–6.00) | 3.97 (0.95–10.61) |
| Social worker | 0.72 (0.88–5.86) | 0.76 (0.09–6.48) |
| Laboratory/radiology technician | 1.91 (0.94–7.40) | 1.63 (0.36–7.33) |
| Housekeeper | 1.77 (0.56–5.59) | 1.79 (0.55–5.83) |
| Work location | ||
| Others | 1 | 1 |
| Outpatient clinic | 1.36 (0.30–6.14) | 0.54 (0.10–2.87) |
| Clinical ward | 2.40 (1.08–5.34) | 2.41 (0.79–7.37) |
| Intensive care unit | 2.52 (0.31–6.83) | 2.01 (0.54–7.41) |
| Surgery ward | 0.65 (0.18–2.34) | 0.37 (0.09–1.57) |
| Radiology/laboratory/pharmacy | 1.81 (0.57–5.68) | 1.51 (0.41–5.62) |
| Ward with respiratory isolation room | ||
| No | 1 | 1 |
| Yes | 1.32 (0.61–2.87) | 0.65 (0.26–1.62) |
| BCG scar | ||
| No | 1 | 1 |
| Yes | 1.00 (0.47–1.15) | 0.78 (0.35–1.77) |
| Exposure to pulmonary TB case in hospital | ||
| No | 1 | 1 |
| Yes | 0.59 (0.28–1.28) | 0.31 (0.13–0.73) |
CI, confidence interval; BCG, bacillus Calmette–Guérin; TB, tuberculosis.
a
Adjusted for exposure to pulmonary TB case and professional category.