2.3 Participants
The clinical files of 123 patients with AHL were reviewed (61 ± 15
years, 42 men and 81 women). Of those 123 AHL patients, 87 had
sensorineural hearing loss, one patient had conductive hearing loss, and
35 patients had mixed hearing loss. Forty-none patients had UHL, 20
patients had SSD, 26 patients had AHL1, and 28 patients had AHL2.
Excluding one case of conductive hearing loss and 20 cases of SSD, 102
patients were included in the analysis (63 ± 14 years, 37 men and 65
women). Demographic data for the three subtypes are presented in Table
2.
This study classified the etiologies of AHL into sudden hearing loss,
central nervous system (CNS) problem and other unspecified (or
unidentified) etiology. The former two were classified as retrocochlear
causes. This study included 27 patients of sudden hearing loss (age = 60
± 14 years; 10 men and 17 women) and three cases of CNS problem (age =
72 ± 8 years; 1 man and 2 women).