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Table 1 Meta-analysis results of the effects of benzene exposure on various genetic damage indicators

From: Occupational benzene exposure and the risk of genetic damage: a systematic review and meta-analysis

Genetic damage index The number of groups SMD(95% CI) P-Value heterogeneity
I2(%) P-Value
MN frequency 49 1.36 (1.084–1.63) P < 0.05 95.7 P < 0.1
SCE frequency 21 0.98 (0.6–1.36) P < 0.05 91.2 P < 0.1
CA frequency 17 0.76 (0.49–1.03) P < 0.05 81.8 P < 0.1
OTM 5 1.06 (0.63–1.50) P < 0.05 80.1 P < 0.1
TM 8 0.96 (0.34–1.58) P < 0.05 93.9 P < 0.1
TL 12 1.78 (1–2.56) P < 0.05 95.7 P < 0.1
T DNA% 5 1.42 (0.66–2.19) P < 0.05 95.2 P < 0.1