Hearing Phenotypes of Patients with Hearing Loss Homozygous for the GJB2 c.235delc Mutation

Table 5

Degree of hearing loss in patients (both ears) according to age group.

Age	Degree of hearing loss
	Mild	Moderate	Moderate to severe	Severe	Profound
Group 1	1 (0.32%)	2 (0.64%)	19 (6.09%)	42 (13.46%)	248 (79.49%)
Group 2	0	12 (20.69%)	12 (20.69%)	9 (15.52%)	25 (43.10%)
Group 3	0	4 (11.76%)	8 (23.53%)	4 (11.76%)	18 (52.94%)
Group 4	0	2 (2.38%)	7 (8.33%)	15 (17.86%)	60 (71.43%)

Group 1 (≤6 years old), group 2 (6.1–12 years old), group 3 (12.1–18 years old), and group 4 (≥18 years old). The value outside each pair of parentheses represents the number of ears with this degree of hearing loss; the value inside each pair of parentheses represents the percentage of ears with this degree of hearing loss relative to the total number of ears in each group.