The Bone-Anchored Hearing Aid
Quality-of-Life Assessment
Myrthe K. S. Hol, MD; Marian A. Spath, MSc; Paul F. M. Krabbe, PhD; Catharina T. M. van der Pouw, MD, PhD;
Ad F. M. Snik, PhD; Cor W. R. J. Cremers, MD, PhD; Emmanuel A. M. Mylanus, MD, PhD
Objectives: To assess the impact of a bone-anchored
hearing aid (BAHA) on the quality of life (QOL) of adults
and to test the hypothesis that a BAHA improves QOL
because otorrhea and/or skin irritations decrease.
Design: Prospective postal-based questionnaire study
using validated health-related QOL instruments, com-
bined with hearing-aid–related questions.
Patients and Methods: The study included 56 con-
secutive adult patients with acquired conductive or mixed
hearing loss who were scheduled for BAHA implanta-
tion at the University Medical Centre Nijmegen, Nijme-
gen, the Netherlands. All 56 patients completed the 36-
Item Short-Form Health Survey (SF-36), the EuroQol-5D
(EQ-5D), and the Hearing Handicap and Disability In-
ventory (HHDI); 36 patients had been using an air-
conduction hearing aid (ACHA) and 20 patients a con-
ventional bone-conduction hearing aid (CBHA).
Questionnaires were filled out before surgery and after
6 months of experience with the BAHA.
Results: In the SF-36 group, there was significant
improvement in the scores of the mental health domain
( P =.02). When the SF-36 patients were classified
according to previous hearing aid, there was no statisti-
cally significant change in the scores in any of the
domains. In the EQ-5D group and in its ACHA and
CBHA subgroups, there were no important differences
in the results before and after the patients received
their BAHAs. In the HHDI group, the handicap and
disability scales showed significant improvement
(P.01) irrespective of the type of previously worn
hearing aid.
Conclusions: Overall, generic health-related QOL was
not influenced significantly by the use of a BAHA
according to the SF-36 and the EQ-5D. The more
disease-specific scales (HHDI) did show improved QOL
with a BAHA.
Arch Otolaryngol Head Neck Surg. 2004;130:394-399
S
EVERAL CLINICAL STUDIES
have evaluated surgical and
audiometric outcomes with
the bone-anchored hearing
aid (BAHA).
1-4
It has been
shown that the percutaneous coupling of
the BAHA to the skull is safe and stable
over time. Furthermore, these studies have
consistently shown that the audiological
results are superior to those obtained with
conventional bone conductors and, al-
though less convincingly, with air-
conduction hearing aids (ACHAs).
1-4
Because a surgical procedure is in-
volved, and the financial costs are rela-
tively high, it seems more important to
evaluate subjective appraisals in studies
in which conventional hearing aids were
replaced with a BAHA. Most studies
2-8
that reported subjective assessments of
patients fitted with a BAHA used ques-
tionnaires with items concerning the pa-
tient’s attitude toward the new hearing
aid itself or the patient’s performance in
various listening situations and condi-
tions. The questionnaires compared the
BAHA with conventional hearing aids,
and, again, the results favored the use of
the BAHA.
5-8
The importance of patient outcome
research is becoming increasingly recog-
nized, and a number of recent studies
9-11
have focused on quality-of-life (QOL) is-
sues. Instruments used to obtain out-
come measurement after hearing aid fit-
ting vary in length and internal structure.
Use of an appropriate instrument is es-
sential to obtain valid and clinically mean-
ingful measurement of outcome. Fre-
quently used instruments quantify
disability and handicap as well as benefit
and health status. In most studies, a sig-
nificant reduction in hearing disability and
handicap was noted, while Dutt et al
9
and
other authors
10,11
reported improved QOL.
9
All data collection in these studies can be
ORIGINAL ARTICLE
From the Departments of
Otorhinolaryngology (Drs Hol,
van der Pouw, Snik, Cremers,
and Mylanus) and Medical
Technology Assessment
(Ms Spath and Dr Krabbe),
University Medical Centre
Nijmegen, Nijmegen, the
Netherlands. The authors have
no relevant financial interest in
this article.
(REPRINTED) ARCH OTOLARYNGOL HEAD NECK SURG/ VOL 130, APR 2004 WWW.ARCHOTO.COM
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©2004 American Medical Association. All rights reserved.