|  | OR | 95% C.I. | p | |
---|---|---|---|---|---|
Length of employment | (0–10) | 1.00 |  |  |  |
 | (11–45) | 1.40 | 0.69 | 2.83 | 0.35 |
Contact | sporadic | 1.00 | Â | Â | Â |
 | constant | 1.98 | 0.66 | 5.91 | 0.22 |
Exposure | No | 1.00 | Â | Â | Â |
 | Incidental | 1.05 | 0.40 | 2.76 | 0.93 |
 | Contagious material | 1.86 | 0.51 | 6.81 | 0.35 |
 | TB patients | 2.96 | 0.93 | 9.40 | 0.07 |
Sex | F | 1.00 | Â | Â | Â |
 | M | 0.59 | 0.18 | 1.96 | 0.39 |