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Health-Related Quality of Life and Medication Adherence in Elderly Patients With Epilepsy Publisher Pubmed



Hamedishahraki S1 ; Eshraghian MR1 ; Yekaninejad MS1 ; Nikoobakht M2 ; Rasekhi A3 ; Chen H4 ; Pakpour A5, 6
Authors
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Authors Affiliations
  1. 1. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Neurosurgery, Iran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Biostatistics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
  4. 4. School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, Australia
  5. 5. Social Determinants of Health Research Centre, Qazvin University of Medical Sciences, Qazvin, 3419759811, Iran
  6. 6. Department of Nursing, School of Health and Welfare, Jonkoping University, Jonkoping, Sweden

Source: Neurologia i Neurochirurgia Polska Published:2019


Abstract

Objective. Considering the high prevalence of epilepsy in the elderly and the importance of maximising their quality of life (QoL), this study aimed to investigate the relationship between medication adherence and QoL, and the mediating effects of medication adherence on the association between serum antiepileptic drug (AED) level and seizure severity with QoL in elderly epileptics. Methods. In a longitudinal study, 766 elderly patients with epilepsy who were prescribed a minimum of one antiepileptic drug were selected by convenience sampling method. A Medication Adherence Report Scale (MARS-5) questionnaire was completed at the baseline. Seizure severity and QoL were assessed after six months using the Liverpool Seizure Severity Scale (LSSS) and the QoL in Epilepsy (QOLIE-31) questionnaires respectively. Serum level of AED was also measured at six-month follow-up. Results. Medication adherence was significantly correlated with both seizure severity (β = -0.33, p < 0.0001) and serum AED level (β = 0.29, p < 0.0001) after adjusting for demographic and clinical characteristics. Neither QoL nor its sub-classes were correlated with seizure severity. In addition, a significant correlation was not observed between serum AED level and QoL. However, medication adherence was significantly correlated with QoL (β = 0.30, p < 0.0001). The mediating effects of medication adherence on the association between serum AED level (Z = 3.39, p < 0.001) and seizure severity (Z = -3.47, p < 0.001) with QoL were supported by the Sobel test. Conclusion. This study demonstrates that medication adherence has a beneficial impact on QoL in elderly epileptics. Therefore, adherence to treatment should be monitored to improve their QoL. © 2019 Polish Neurological Society.
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