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Table 5 Distribution of HL severity of GJB2(−) and GJB2(+) subgroups

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

  Profound HL Severe HL Moderate HL Mild HL Total
GJB2 (−) 20 12 19 6 57
GJB2 (+) 57 10 11 6 84
Total 77 22 30 12 141
Pearson Chi-Square 15.5 p = 0.001
Empirical effect size w = 0.7 Empirical power = 1.0