Summary of clinical data for hearing impaired members in family 025.

aM, male; F, female.bPTA, pure-tone air-conduction averages (0.5, 1, 2 and 4 kHz) for the better-hearing ear of affected subjects in family 727.cDiagnosed at the time of test. The severity of hearing impairment was defined as mild (26–40 dB HL), moderate (41–55 dB HL), moderately severe (56–70 dB HL), severe (71–90 dB HL) and profound (>90 dB HL).dN/A, not available; +, positive finding; −, negative finding.