Table 5. Determinants of urinary 1-OHPG, 8-OHdG and DNA strand breaks in nonsmoking workers by mixed models (Noa = 234).
Ln urinary 1-OHPG (µg/g creatinine) | Ln urinary 8-OHdG (µg/g creatinine) | Ln DNA strand breaks (%) | ||||
Variables | β (95% CI) | p-value | β (95% CI) | p-value | β (95% CI) | p-value |
Age (year) | 0.009 (−0.009 to 0.027) | 0.328 | 0.015 (0.003 to0.026) | 0.016 | −0.008 (−0.014 to −0.001) | 0.019 |
Gender | ||||||
Female (reference) | ||||||
Male | −0.369 (−0.712 to −0.026) | 0.035 | −0.111 (−0.337 to 0.116) | 0.334 | 0.035 (−0.083 to 0.153) | 0.557 |
Educational level | ||||||
High school (reference) | ||||||
College | −0.056 (−0.322 to 0.435) | 0.770 | 0.124 (−0.370 to 0.124) | 0.323 | 0.122 (−0.253 to 0.010) | 0.069 |
Group | ||||||
Control group (reference) | ||||||
Exposed group | 0.634 (0.228 to 1.040) | 0.003 | 0.379 (0.108 to 0.649) | 0.007 | 0.621 (0.477 to 0.765) | <0.001 |
Season | ||||||
Winter (reference) | ||||||
Spring | 0.125 (−0.222 to 0.472) | 0.477 | −0.256 (−0.483 to −0.029) | 0.027 | 0.023 (−0.097 to 0.143) | 0.701 |
Summer | 0.080 (−0.457 to 0.616) | 0.769 | −0.506 (−0.857 to −0.156) | 0.005 | 0.051 (−0.143 to 0.245) | 0.603 |
Fall | 0.083 (−0.385 to 0.550) | 0.727 | −0.237 (−0.542 to 0.067) | 0.125 | 0.094 (−0.065 to 0.253) | 0.242 |
Ln 1-OHPG (µg/g creatinine) | 0.101 (0.014 to 0.187) | 0.023 | 0.007 (−0.036 to 0.051) | 0.732 | ||
Ln 8-OHdG (µg/g creatinine) | −0.019 (−0.088to 0.050) | 0.587 |
Abbreviations: number of observations (No).