Objectives: Anti-seizure medication (ASM) non-adherence contributes to treatment gap and increases mortality and morbidity associated with epilepsy. Beliefs about medications are considered better predictors of ASM non-adherence than clinico-demographic factors. We aimed to look into ASM non-adherence rates among adults with epilepsy (AWE), identify the contributing barriers and determine whether medication beliefs were more powerful predictors than clinico-demographic factors.
Methods: This was a cross-sectional study of AWE receiving ASMs. Participants (n = 304) were assessed by validated questionnaires, for non-adherence (8-item Morisky Medication Adherence Scale) and perceptions of ASMs (Beliefs about Medicines Questionnaire) along with clinico-demographic details.
Results: Our group with high literacy and low-income had a high non-adherence rate (55 %) despite having positive beliefs (Mean necessity-concern differential [NCD] = 2.86). Among the beliefs, ASM non-adherence was significantly associated with ASM-concern (t = 4.23, p < 0.001) and NCD (t = -4.11, p < 0.001). Stepwise multiple linear regression analysis showed that non-adherence was significantly associated with per-capita income (β -0.215, p < 0.001), ASM side effects (β 0.177, p = 0.001), high seizure frequency (β 0.167, p = 0.002), ASM availability (β -0.151, p = 0.004), ASM costs (β -0.134, p = 0.013 and NCD (β -0.184, p = 0.001). NCD accounted for 2.9 % of the variance in non-adherence whereas the other clinico-demographic variables together accounted for 14.6 %.
Conclusion: We describe a paradigm shift in AWE with high non-adherence to ASMs, wherein clinico-demographic variables emerge as better predictors of non-adherence than beliefs. High literacy facilitates the perception of need for ASMs whereas costs and side effects hamper adherence.
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| http://dx.doi.org/10.1016/j.seizure.2020.11.003 | DOI Listing |
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