Evaluation of the International Outcome Inventory for Hearing Aids in a Veteran Sample

Abstract

The results of this study confirmed that the psychometric properties of the IOI-HA questionnaire are strong and are essentially the same for the veteran sample and the original private-pay sample. The veteran norms, however, produced higher outcomes than those established originally, possibly because of differences in the population samples and/or hearing aid technology. Clinical and research applications of the current findings are presented. Based on the results from the current study, the norms established here should replace the original norms for use in veterans with current hearing aid technology.

Exploring the Effects of the Narrative Embodied in the Hearing Aid Fitting Process on Treatment Outcomes

“…This is substantially larger than the critical difference of 1.75 scale points derived by Smith et al (2009) for subjects with "none to moderate" unaided hearing difficulty, indicating a very high probability of a real perceived difference.…”

Health behavior theories as predictors of hearing-aid uptake and outcomes

“…The mean IOI-HA total score was 28.7 out of a possible maximum of 35, with scale scores ranging between 4.0 and 4.4 out of a maximum of 5. This is typical of IOI-HA scores seen among veteran and non-veteran populations (Cox et al, 2003;Smith et al, 2009). Likewise, the mean total PIADS score was +0.8 points, which again is similar to that shown in prior work in which the PIADS was used to assess hearing-aid outcomes (Saunders & Jutai, 2004;Saunders et al, 2009;Saunders & Forsline, 2012).…”

Acceptable noise level (ANL) with Danish and non-semantic speech materials in adult hearing-aid users

“…increases HA usage (Humes et al, 2002;Kramer et al, 2002;Larson et al, 2002;Stephens, 2002;Stark & Hickson, 2004;Heuermann et al, 2005;Meister et al, 2005;Metselaar et al, 2009;Smith et al, 2009; Br ä nnstr ö m & Wennerstr ö m, 2010; Hickson et al, 2010). Whether the HAs are fi tted monaurally or binaurally does not seem to infl uence the IOI-HA global outcome (Heuermann et al, 2005;Cook & Hawkins, 2007;Br ä nnstr ö m & Wennerstr ö m, 2010;Hickson et al, 2010), although binaurally fi tted subjects seem to use their HAs more (Stephens, 2002).…”

“…A global score can be calculated as the total sum of scores on all seven items, where higher scores suggest better HA fi tting outcome (Cox & Alexander, 2002). The psychometric properties of the IOI-HA have been evaluated for English speaking populations (Cox & Alexander, 2002;Stephens, 2002;Smith et al, 2009;Hickson et al, 2010) and for a few other languages Heuermann et al, 2005; Br ä nnstr ö m & Wennerstr ö m, 2010; Liu et al, 2011) including Danish Jespersen et al, 2005;Vestergaard, 2006). Previous studies indicate that the IOI-HA is infl uenced by two factors, one pertaining to introspection ( ' me and my hearing aid ' ; items 1, 2, 4, and 7) and one to interaction ( ' me and the rest of the world ' ; items 3, 5, and 6) (Cox & Alexander, 2002;Kramer et al, 2002;Stephens, 2002;Vestergaard, 2006;Ö berg et al, 2007;Br ä nnstr ö m & Wennerstr ö m, 2010).…”