Abstract
Adherence to immunosuppressive medication is essential for favourable kidney transplant outcomes. The present study aims to investigate how self-efficacy beliefs, health locus of control and religiosity are associated with adherence to immunosuppressives in post kidney transplant recipients. This is a cross-sectional study with 88 recipients with more than 1 year after transplantation. Three methods were used to classify patients as adherent or non-adherent: Basel Assessment of Adherence Scale for Immunosuppressives - BAASIS, the collateral report and blood levels of immunosuppressive medications. Self-efficacy, health locus of control, and religiosity were evaluated applying General Perceived Self-Efficacy Scale, Multidimensional Health Locus of Control Scale and Duke University Religion Index, respectively. Non-adherence was modelled by uni- and multivariated analysis. Sixty-three percent of the patients were male, age 47.2 ± 12.9 years, and median post-transplant time 108.71 (49.0-266.0) months. We found 70.5% of patients were non-adherent through at least one method. Adherent patients presented higher self-efficacy scores (45.1 ± 4.9 vs 38.3 ± 8.6; P < 0.001) and higher intrinsic religiosity (14.0 ± 1.6 vs. 12.8 ± 2.5; P = 0.016) compared to the non-adherents. Organizational and non-organizational religiosity did not differ between these groups. By logistic regression, non-adherence was associated with lower self-efficacy (OR 0.81, IC 0.70-0.92, P = 0.002), chance locus of control (OR 1.23, IC 1.04-1.45, P = 0.016) and lower intrinsic religiosity (OR 0.56, IC 0.38-0.84, P = 0.006). Our study showed that self-efficacy, chance locus of control, and intrinsic religiosity were associated with non-adherence to immunosuppressives. A broader perception of the kidney transplant patient´s integrality can help health professionals to design strategies to promote adherence in this population.
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