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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