# Patient’s Satisfaction with Hearing Aids: The Italian Version of the International Outcome Inventory for Hearing Aids (IOI-HA-It)

## TL;DR

This study validates the Italian version of a questionnaire that measures patient satisfaction with hearing aids, showing it is reliable and useful in clinical practice.

## Contribution

The study provides a validated Italian version of the IOI-HA for assessing hearing aid satisfaction in clinical settings.

## Key findings

- The IOI-HA-It showed adequate reliability and validity for measuring patient satisfaction with hearing aids.
- The questionnaire is brief and cost-effective, making it suitable for routine clinical use.
- Subjective satisfaction with hearing aids cannot be fully predicted by audiometric outcomes alone.

## Abstract

Background: Hearing aid (HA) outcome is a multidimensional construct that requires not only the analysis of auditory function improvement, but also a subjective evaluation of benefits from HAs. Indeed, subjective satisfaction of patients with HAs is not entirely predictable from audiometric outcomes such as real ear gain or functional gain. In light of this possible discrepancy the 1990 Consensus Statement for “Recommended Components of a Hearing Aid Selection Procedure for Adults” suggested that verification of hearing aids benefit also incorporate the subjective satisfaction with amplification. Objectives: The aim of this study was to test the validity and reliability of the Italian version of International Outcome Inventory for Hearing Aids (IOI-HA-It). Methods: Ninety-eight outpatients were randomly recruited to participate in this study. They all made regular use of HAs and were supplied with three different self-administered questionnaires. The International Outcome Inventory for Hearing Aids (IOI-HA), the Hearing Handicap Inventory for Adults (HHIA) or for elderly (HHIE) and the Italian translation of the MOS 36-Item Short Form Health Survey (SF-36). The epidemiological features and results were analyzed as descriptive statistics. Continuous variables were expressed as means with standard deviations (SDs). Reliability of the Italian version was assessed by the following two parameters: internal and test–retest consistencies. Internal consistency reliability was measured by Cronbach’s alpha coefficient. Results and Conclusions: This study evidenced that the IOI-HA-It is proved to offer adequate subjective outcome measures to better appreciate the integral evaluation of a patient’s rehabilitative experience. Furthermore, since it is a very brief questionnaire with low demand on time and cost involved in its compilation, it should be recommended in clinical practice.