PTA4: the four-frequency (0.5, 1, 2, and 4 kHz)
pure-tone average thresholds on pure tone audiogram; WRS: word
recognition score.
Fig. 1. Box-plots of differences in the hearing thresholds
according to three outcomes of hearing-aid use (successful users vs.
intermittent users vs. failed users). The hearing threshold at 1 Hz for
the better ear was significantly different between successful users and
intermittent users in the cases with UHL, shown in figure B.
Fig. 2. Box-plots of differences in hearing thresholds
according to two outcomes of hearing-aid use (successful and
intermittent users vs. failed users). There was no frequency that
differed significantly between two outcomes.
Fig. 3. Comparison by the etiology of hearing loss according to
the thresholds and outcomes of hearing-aid use compared using three
outcomes (successful users versus intermittent users versus failed
users) and two outcomes (successful-intermittent users versus failed
users).
S, successful users; I, intermittent users, SI, successful-intermittent
users; F, failed users.