Table 3 Combined effects of benzene exposure on MN frequency, SCE frequency and T DNA% before and after publication bias correction by the trim and fill method
From: Occupational benzene exposure and the risk of genetic damage: a systematic review and meta-analysis
Genetic damage index | The number of groups | Q-value | P-value | Effect model | SMD (95%CI) | |
|---|---|---|---|---|---|---|
Before trim, and fill | After trim, and fill | |||||
MN frequency | 49 | 49 | 1126.549 | < 0.05 | Random | 1.36 (1.08–1.63) |
SCE frequency | 21 | 21 | 228.207 | < 0.05 | Random | 0.98 (0.6–1.36) |
T DNA% | 5 | 6 | 113.919 | < 0.05 | Random | 1.15 (0.37–1.91) |