| Group |
n |
Mean age year ± SE |
Mean duration of exposure year ± SE |
Smokers a % |
Drinkers b % |
| Control |
33 |
39.9 ± 1.,4 |
- |
26.6 |
42.4 |
| Anesthetic exposed |
127 |
40.0 ± 0.8 |
14.8 ± 0.9 |
39.4 |
65.4 |
| Anesthetics+ X-ray |
70 |
39.4 ± 1.2 |
13.9 ± 1.2 |
40.0 |
70.0 |
| Only anesthetics |
57 |
40.7 ± 1.0 |
15.9 ± 1.3 |
38.6 |
63.2 |
| Halothane |
57 |
40.0 ± 1.3 |
14.9 ± 1.3 |
40.4 |
64.9 |
| No halothane |
70 |
40.0 ± 1.1 |
14.7 ± 1.2 |
34.3 |
62.9 |
| Quality control |
87 |
39.6 ± 1.0 |
14.6 ± 1.0 |
33.3 |
63.2 |
| No quality control |
41 |
40.9 ± 1.5 |
15.2 ± 1.6 |
51.2 |
73.1 |
a: active smoker
b: less than 80g alcohol |
