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  • Title: Acceptable noise level (ANL) and real-world hearing-aid success in Taiwanese listeners.
    Author: Ho HC, Wu YH, Hsiao SH, Zhang X.
    Journal: Int J Audiol; 2013 Nov; 52(11):762-70. PubMed ID: 24099584.
    Abstract:
    OBJECTIVE: The objective of this prospective study was to investigate the relationship between acceptable noise level (ANL), which was measured using Taiwanese and the international speech test signal (ISTS), and real-world hearing-aid success for listeners who were representative of the population commonly seen in clinics. DESIGN: Unaided ANLs were measured pre-hearing-aid fitting. Hearing-aid success was assessed three months post-fitting using the international outcome inventory for hearing aids (IOI-HA) and a hearing-aid use questionnaire. STUDY SAMPLE: Eighty adults with hearing impairment completed the study. RESULTS: Both Taiwanese and ISTS ANLs were significantly associated with hearing-aid success, with higher ANLs suggesting poorer outcomes. However, the ANL's prediction accuracy for the probability of hearing-aid success was either much lower than that suggested by some literature, or was not much different from that of simply predicting all listeners as successful users. CONCLUSIONS: The current study suggested the possibility of using ANL to predict hearing-aid success. However, the usefulness of ANL as a clinical tool is unlikely to be as great as indicated by the literature.
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