英文摘要 |
Background: Uncontrolled blood pressure (BP) attributed to medication non‐adherence may increase the risks of complications and of death. Purpose: This study aimed to identify factors that influence poor medication adherence in hypertensive patients and to establish the relationship between BP and medication adherence. Methods: This cross‐sectional study enrolled 546 outpatients with hypertension from a regional hospital in eastern Taiwan. Data collected from participants included BP measurements and answers to a structured questionnaire. Descriptive statistics were performed for all measures as appropriate. Assessments of differences in adherence were based on demographic, medical history, and BP. Chi‐Square test and Fisher's exact test for categorical variables or independent t‐test for continuous variables were performed. The relationship between adherence and BP was analyzed using multiple regression analysis. All data were analyzed using SPSS 20.0 statistical analysis software. Results: A total of 30% of patients were classified in the poor adherence category. A significant difference was found between adherence and poor adherence groups in terms of: type of medication, side effects, and sources of medications. No significant difference, however, was found across the two adherence groups in terms of: number of pills, medication schedule, duration of hypertension and its related complications, and use of complementary‐and‐alternative medicine (CAM). The diastolic blood pressure (DBP) and mean arterial pressure (MAP) differed significantly between the two groups. However, no significant difference in systolic blood pressure (SBP) was identified between the two groups. When SBP and DBP were considered separately, the number of patients who had good and poor control of SBP and DBP differed significantly between the two groups. Side effects and sources of medications were significant predictors of adherence (p < .05). Adherence was a significant predictor of SBP and DBP (p < .05). Conclusions: Side effects and sources of medications were identified as factors that influence the medication adherence of Taiwanese patients, which was identified as a reliable predictor of BP outcome. |