Table 4 The result of meta-regression
From: Occupational benzene exposure and the risk of genetic damage: a systematic review and meta-analysis
Genetic damage indicators | Coef | P | 95%CI |
|---|---|---|---|
CA frequency | |||
 Year of publication (year< 2000 vs. year> = 2000) | 0.053 | 0.863 | −0.593-0.699 |
 Geographical region (Eastern vs. Western) | −0.321 | 0.279 | −0.931-0.288 |
 Exposure factor (Benzene vs. Mixed benzene) | 0.772 | 0.005 | 0.276–1.267 |
TL | |||
 Year of publication (year< 2000 vs. year> = 2000) | 1.094 | 0.519 | −2.551-4.740 |
 Geographical region (Eastern vs. Western) | −1.483 | 0.117 | −3.407-0.441 |
 Exposure factor (Benzene vs. Mixed benzene) | 2.573 | 0.004 | 1.011–4.136 |
SCE frequency | |||
 Year of publication (year< 2000 vs. year> = 2000) | −0.494 | 0.341 | −1.552-0.564 |
 Geographical region (Eastern vs. Western) | −1.463 | 0.001 | −2.257- -0.669 |
 Exposure factor (Benzene vs. Mixed benzene) | −0.502 | 0.306 | −1.501-0.497 |
MN frequency | |||
 Year of publication (year< 2000 vs. year> = 2000) | −0.624 | 0.132 | −1.442-0.195 |
 Geographical region (Eastern vs. Western) | −0.949 | 0.087 | −0.204-0.144 |
 Exposure factor (Benzene vs. Mixed benzene) | 0.285 | 0.515 | −0.973-0.709 |