Table 1.
Means (standard deviations) of the demographic characteristics of the exposed and unexposed groups
| Demographic characteristics | Unexposed (n = 80) | Exposed (n = 84) | t-statistic (df) | P-valuea |
|---|---|---|---|---|
|
| ||||
| Mean (SD) | Mean (SD) | |||
| Age (years) | 42.1 (10.9) | 37.4 (7.6) | 3.20 (139.96) | 0.002 |
| Weight (kg) | 75.6 (14.1) | 64.4 (12.9) | 5.31 (162.00) | < 0.001 |
| Height (cm) | 170.8 (7.7) | 169.7 (6.4) | 0.99 (153.92) | 0.323 |
| BMI (kg/m2) | 25.8 (4.2) | 22.4 (4.6) | 4.98 (162.00) | < 0.001 |
| Work history (years) | 18.2 (9.8) | 11.5 (5.4) | 5.34 (122.12) | < 0.001 |
BMI = body mass index.
a
Independent t-test