Genotoxic damage assessment using the micronucleus assay in buccal mucosa of different types of smokers: A cross-sectional study

Table 3 Comparison of micronucleus frequencies per thousand cells between study and control groups, median ± SD

Groups	Micronucleus frequency	Z-Statistic	P value
MS	1.3 ± 1.14	0.13	0.89
ES	2.8 ± 2.41	0.43	< 0.001
CS	3.6 ± 2.25	-3.96	< 0.001
RS	4.4 ± 2.3	-5.21	< 0.001
Control	1.05 ± 0.69

CS: Conventional smokers; MS: Marijuana smokers; ES: Electronic cigarette smokers; RS: Reverse smokers.