Fig. 2From: Comparisons of hearing threshold changes in male workers with unilateral conductive hearing loss exposed to workplace noise: a retrospective cohort study for 8 yearsHearing threshold changes for SNHL and CHL ear by frequency over 8 years (N = 78). SNHL AC, air conduction of sensorineural hearing loss ear; SNHL BC, bone conduction of sensorineural hearing loss ear; CHL AC, air conduction of conductive hearing loss ear; CHL BC, bone conduction of conductive hearing loss earBack to article page