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Pharmacoepidemiological assessment of adherence and influencing co-factors among primary open-angle glaucoma patients—An observational cohort study

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  • Stefanie Frech
  • Daniel Kreft
  • Rudolf F Guthoff
  • Gabriele Doblhammer

Abstract

The goal of this study was to assess the adherence of primary open-angle glaucoma (POAG) patients to medication, and to determine co-factors influencing adherence, using a representative sample of members of the largest German public health insurer. The observational cohort study was based on a longitudinal data set from 2010–2013 and included 250,000 insured persons aged 50 and older with 10,120 diagnosed POAG patients. Uni- and multivariate analysis was performed to investigate several aspects of glaucoma, such as prevalence, adherence, and co-factors influencing adherence. The main outcome measured adherence with prescriptions filled within a year. Multivariate panel regression analysis was used to determine the co-factors influencing this adherence. Prevalence of POAG was 3.36% [CI: 3.28–3.43%], with 2.91% [CI: 2.81–3.01%] for males and 3.71% [CI: 3.61–3.81%] for females, increasing with age. The mean level of adherence in terms of prescriptions filled was 66.5% [CI: 65.50–67.60%]. The results of this analysis revealed a significant influence of age, duration of the disease, care need, distance to death, and multimorbidity as co-factors of non-adherence, whereas gender had no influence. The analysis provided detailed information about POAG health care aspects concerning prevalence and adherence. The most endangered risk groups for non-adherence were patients aged 50–59, patients older than 80 years, patients with a longer duration of POAG, patients with care needs, and patients with three or more severe diseases in addition to glaucoma. To know the predictors responsible for an increased risk to develop POAG is of importance for all persons involved in health care management. Therefore effective strategies to increase awareness of patients and medical care personnel about non-adherence and the importance of a regular and continuous medication to avoid further nerve fiber damage and possible blindness have to be developed.

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  • Stefanie Frech & Daniel Kreft & Rudolf F Guthoff & Gabriele Doblhammer, 2018. "Pharmacoepidemiological assessment of adherence and influencing co-factors among primary open-angle glaucoma patients—An observational cohort study," PLOS ONE, Public Library of Science, vol. 13(1), pages 1-14, January.
    • Handle: RePEc:plo:pone00:0191185
    DOI: 10.1371/journal.pone.0191185
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    References listed on IDEAS

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    1. Gurwitz, J.H. & Glynn, R.J. & Monane, M. & Everitt, D.E. & Gilden, D. & Smith, N. & Avorn, J., 1993. "Treatment for glaucoma: Adherence by the elderly," American Journal of Public Health, American Public Health Association, vol. 83(5), pages 711-716.
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    Cited by:

    1. Sabine Schulz & Laura Harzheim & Constanze Hübner & Mariya Lorke & Saskia Jünger & Annika Buchholz & Stefanie Frech & Melanie Steffens & Christiane Woopen, 2023. "Patient Preferences for Long-Term Implant Care in Cochlear, Glaucoma and Cardiovascular Diseases," IJERPH, MDPI, vol. 20(14), pages 1-19, July.

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