Characteristics of exposure data of 57 subjects
| Variable | Mean (SD) | Median (range) |
|---|---|---|
| Airborne styrene level (ppm) | 49.90 (35.9) | 53.50 (0.3–133.5) |
| Airborne acetone level (ppm) | 49.40 (25.1) | 45.10 (1.3–135.4) |
| Period of exposure (mth) | 76.60 (25.1) | 86.00 (7.0–123.0) |
| MA (g/g cr.) | 0.26 (0.35) | 0.16 (0.00–1.81) |
| PGA (g/g cr.) | 0.11 (0.11) | 0.08 (0.00–0.48 |
| MA+PGA (g/g cr.) | 0.37 (0.46) | 0.23 (0.00–0.29 |
| Urinary styrene (μg/l) | 138.62 (174.08) | 81.35 (0.00–805.20) |
| Urinary acetone (mg/l) | 20.14 (17.96) | 15.45 (2.60–94.60 |
| CEI (y) | 6.43 (5.20) | 5.50 (0.01–17.67) |