Distribution of characteristics in 2-EEA high exposure and comparison groups
| Variables | High exposure n=29 | Comparison group n=56 | p value* |
|---|---|---|---|
| *By Student’s t test for continuous variables or χ2 test for categorical variables. | |||
| **Mean ± standard error. | |||
| Age (y)** | 23.07 ±5.90 | 25.71 ±5.75 | 0.38 |
| <20 | 9 (31.0%) | 9 (15.8%) | |
| 20–30 | 17 (58.6%) | 37 (64.9%) | |
| 30–40 | 3 (10.3%) | 10 (17.5%) | |
| >40 | 0 (0%) | 1 (1.8%) | |
| Duration of work (y) | 3.55±3.02 | 4.55±3.43 | 0.21 |
| <2 mth | 3 (10.4%) | 5 (8.8%) | |
| 2 mth–1 y | 5 (17.2%) | 5 (8.8%) | |
| 1–5 y | 10 (34.5%) | 25 (43.9%) | |
| >5 y | 11 (37.9%) | 22 (38.5%) | |
| BMI (kg/m2) | 20.49±2.65 | 20.62±2.90 | 0.85 |
| Sex (male) | 17 (58.6) | 31 (54.4) | 0.70 |
| Married | 10 (34.5) | 24 (42.1) | 0.56 |
| Smoker | 10 (34.5) | 14 (24.6) | 0.42 |
| Alcohol (non-drinker) | 16 (55.2) | 30 (52.6) | 0.53 |
| Coffee (non-drinker) | 11 (38.0) | 16 (28.2) | 0.10 |
| Tea (non-drinker) | 8 (27.8) | 9 (15.8) | 0.34 |