Table 2.

The frequencies of BCP and preC mutations between rt269L and rt269I in a Korean cohort and from reference strains.

Mutation		Nucleotide	Clinical isolates			Reference strains
			rt269L (n = 115)	rt269I (n = 69)	p-value	rt269L (n = 111)	rt269I (n = 129)	p-value
BCP mutation	A1762T	A	47 (40.87%)	23 (33.33%)	ns	31(27.93%)	24 (18.60%)	ns
		T	68 (59.13%)	46 (66.67%)		80(72.07%)	105 (81.40%)
	G1764A	G	44 (38.26%)	16 (23.19%)	*	29(26.13%)	17 (13.18%)	*
		A	71 (61.73%)	53 (76.81%)		82(73.87%)	112 (86.82%)
preC mutation	G1896A	G	83 (72.17%)	33 (47.83%)	***	79(71.17%)	65 (50.39%)	***
		A	32 (27.83%)	36 (52.17%)		32(28.83%)	64 (49.61%)

BCP, basal core promoter; preC, pre-core.

Continuous variables were tested using the chi-squared test. ns, non-significant;

^*p < 0.05; **p < 0.01;

^***p < 0.001.