Comorbidity in adults with hearing difficulties: Which chronic medical conditions are related to hearing impairment?

Abstract

Objectives: To investigate the occurrence of 27 chronic medical conditions in a cohort of adults with and without hearing impairment, and to examine the association between these conditions and hearing ability. Design: The National Longitudinal Study on Hearing (NL-SH study) is a large prospective study among adults aged 18 to 70 years, conducted via the internet in the Netherlands. Hearing ability was measured with a digits-in-noise test and comorbidity was assessed through self-report. Study sample: Cross-sectional data of 890 hearing-impaired and 975 normally-hearing adults were analyzed. Both descriptive statistics and multinomial logistic regression analyses were conducted. Results: Of the NL-SH participants with insufficient or poor hearing ability, 78.5% reported to suffer from at least one additional chronic condition. This proportion was larger than in the normally-hearing group (68.6% with one or more chronic conditions and 37.7% with two or more). After adjustment for age and gender, ‘dizziness causing falling’, ‘diabetes’ and ‘arthritis types other than osteoarthritis and rheumatic arthritis’ were significantly associated with poor hearing ability. Conclusions: Our results show that some previously reported associations do not only occur in older age groups, but also in younger cohorts. Comorbidity is relevant in the rehabilitation (multi-disciplinary care) and the clinical encounter.

Key Words::

• Comorbidity
• hearing problems
• epidemiology
• adults
• diabetes

Note

Acknowledgements

The authors thank the participants of the National Longitudinal Study on Hearing. We also acknowledge the assistance of Hans van Beek in managing the database and developing and maintaining the study website. The current results were presented at conferences, such as the Adult Hearing Screening conference in Como, Italy (June 12, 2012), the Netherlands conference on Public Health (April 12, 2012), and during the annual meetings of Dutch Audiologists (January 30, 2012) and Dutch Otolaryngologists (November 9, 2012). We thank the anonymous reviewers for their valuable comments on an earlier version of this manuscript.

Declaration of interest: The NL-SH study is financially supported by Phonak AG, Switzerland. None of the authors has a conflict of interest.

Notes

1. Davis A. 2012, June. Adult Hearing Screening: Health Policy Issues. Keynote lecture at the Adult Hearing Screening conference, Cernobbio, Italy.