Table 4. Number (%, 95% CI) of heterozygous carriers of del(GJB2-D13S175) or known GJB2 mutations in apparently healthy populations.

Mutation	Ingushes from Ingushetia, n=151	Chechens from Ingushetia, n=90	Chechens from Chechnya, n=147
del(GJB2-D13S175)	1 (0.7; 0.02–3.6)	1 (1.1; 0.03–6.0)	0 (0; 0–2.5)
c.35delG	3 (2; 0.4–5.7)	0 (0; 0–4.0)	1 (0.7; 0.02–3.7)
c.358_360delGAG	0 (0; 0–2.4)	1 (1.1; 0.03–6.0)	2 (1.4; 0.2–4.8)
c.313_326del14	0 (0; 0–2.4)	0 (0; 0–4.0)	0 (0; 0–2.5)
c.235delC	0 (0; 0–2.4)	0 (0; 0–4.0)	0 (0; 0–2.5)

Abbreviation: CI, confidence interval.