Table 3.
Urinary 1-Hydroxypyrene levels (μmol/mol Creatinine) in exposure and control groups
| Urinary 1-hydroxypyrene | Exposure group*,† |
Control group |
|||
|---|---|---|---|---|---|
| 1 | 2 | Nonsmoker | Smoker | ||
| On work, mean ± SD | 0.35 ± 0.32 | 0.80 ± 0.40 (11 mo) |
1.06 ± 0.29 (10 d) |
ND–0.14 | 0.24 ± 0.16 |
| Off work, mean ± SD | 0.41 ± 0.74 | 0.27 ± 0.22 (1 mo) |
0.95 ± 0.32 (2 d) |
– | – |
| Total | – | 0.76 ± 0.41 (12 mo) |
– | – | – |
∗
Exposure group 1: workers at KuNaiSang, SamNakYo, HuaThanon, NamKhok, and DonKiLek cooperative; Exposure group 2: workers at SaiKhao cooperative. ND, not detected; SD, standard deviation.
†
There were no significantly difference of urinary 1-OHP between on and off work (p-value >0.05).