|  | OR | 95% CI | p | |
---|---|---|---|---|---|
Length of employment | (0–10) | 1.00 |  |  |  |
 | (11–45) | 1.04 | 0.56 | 1.93 | 0.91 |
Contact | sporadic | 1.00 | Â | Â | Â |
 | constant | 1.96 | 0.68 | 5.67 | 0.21 |
Exposure to TB | No | 1.00 | Â | Â | Â |
 | Incidental | 1.25 | 0.58 | 2.69 | 0.57 |
 | Contagious specimen | 1.50 | 0.46 | 4.85 | 0.50 |
 | TB patients | 1.29 | 0.45 | 3.70 | 0.63 |
Sex | F | 1.00 | Â | Â | Â |
 | M | 0.61 | 0.22 | 1.72 | 0.35 |