Table 1. Baseline characteristics and genetic screening results

Characteristic	Value (n=32)
Sex (male / female)	18 (56.3) / 14 (43.8)
Age at referral, months, median (range)	2.0 (0.7–29.1)
Age at last hearing test, months, median (range)	5.8 (0.0–94.1)
Duration of audiological follow-up, months, median (range)	2.0 (0.0–90.3)
Newborn hearing screening, bilateral pass	32 (100)
Involved gene
GJB2	19 (59.4)
SLC26A4	10 (31.3)
MT-RNR1	3 (9.4)
CDH23	1 (3.1)

Values are presented as number (%) unless otherwise indicated.
One child carried variants in both SLC26A4 and MT-RNR1 and is counted under both genes.