Medication adherence and associated factors among elderly hypertension patients with uncontrolled blood pressure in rural area, Northeast Thailand

Abstract

Purpose: Hypertension is a common disease among elderly. Adherence to antihypertensive medication is a key predictor of optimal blood pressure control that prevents the risk of cardiovascular disease and potentially death. The purpose of this paper is to assess adherence to antihypertension and identify associated factors among the elderly in a rural area, Buengkan province, Thailand. Design/methodology/approach: A health facilities based cross-sectional study was conducted in Buengkan district. A simple random sampling method was used to select 408 participants. A structured questionnaire adapted from the World Health Organization STEPwise approach was used to collect data. The medication adherence level was identified by pill count with percentage ⩾70 defined as good adherence. Descriptive and summary statistics were used. Bivariate analysis was done using Pearson’s χ2 test, and multivariable analyses were also carried out. Findings: A total of 408 (143 males and 265 females) elderly hypertension patients with uncontrolled blood pressure participated in this study. Most of the participants were found to have lower adherence to medication treatment (86.8 percent), whereas the remaining ones (13.2 percent) were found to have good adherence. The multivariable logistic regression analysis showed that having a daughter as a care taker (adjust odd ratio=7.99, 95% confidence interval: 1.23–51.778) was significantly associated with high medical adherence. Originality/value: Hypertension medication adherence among elderly patients with uncontrolled blood pressure was poor. Having a care taker, especially a daughter, is a key to improve adherence. Effective strategy to improve adherence should focus on and involve family participation into the program.