Characteristics of exposed group and control group
| Total subjects | Matched by age | |||
|---|---|---|---|---|
| Variable | Exposed group (n=57) | Control group (n=69) | Exposed group (n=43) | Control group (n=43) |
| Values presented as mean (SD). | ||||
| *p<0.05, **p<0.01 (t test used to determine p values). | ||||
| Age (y) | 29.3 (4.5) | 38.3 (11.2)** | 29.7 (4.9) | 31.1 (6.0) |
| Education (y) | 12.3 (0.7) | 14.0 (2.3)** | 12.2 (0.8) | 14.4 (2.0)** |
| Smoking (cigarettes/day) | 11.9 (8.5) | 8.0 (12.5)* | 12.1 (8.3) | 6.6 (10.4)** |
| Alcohol (g/wk) | 89.9 (70.0) | 77.6 (69.6) | 93.6 (65.1) | 81.9 (68.6) |