The high frequency of GJB2 gene mutation c.313_326del14 suggests its possible origin in ancestors of Lithuanian population

Table 6 Distribution of degree of HL in I/I and I/N classes of GJB2 (+) subgroup

Mutation type	Profound	Severe	Moderate	Mild	Total
Mutation type	HL	HL	HL	HL	Total
I/I	55	10	9	0	74
I/N	2	0	2	6	10
Total	57	10	11	6	84
Pearson Chi-Square 50.0				p = 8.005x10⁻¹¹
Empirical effect size w = 1.6				Empirical power = 1.0

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