Abstract:
The purposes of this predictive correlational study were to describe the medication adherence. To study the relationships and to predict between perceived susceptibility, perceived severity, perceived benefits, perceived barriers, depression, comorbidity, self-efficacy, social support, and medication adherence. One hundred and fifty-four out-patients with myocardial infarction after underwent PCI aged 18-59 years old, who were recruited in the heart clinic at the Central Chest Institute, the Police General Hospital, Faculty of Medicine Vajira Hospital and Phramongkutklao Hospital by a multistage random selection. Questionnaires were composed of demographic information, medication adherence, perceived susceptibility, perceived severity, perceived benefits, perceived barriers, PHQ-9, social support, and medication adherence self-efficacy scale. All questionnaires were tested for content validities by five panel of experts, and the reliabilities were .70, .85, .82, .91, .93, .89, .71, and .94, respectively. Descriptive statistics (Percentage, mean, and standard deviation), and Hierarchical multiple regression were used to analyze data. The major findings were as follows:
1. Mean score of medication adherence in myocardial infarction after underwent PCI patients was at a high level (X bar = 31.50, SD = 4.04). 2.There were no significant relationships between perceived susceptibility, comorbidity, and medication adherence in myocardial infarction after underwent PCI patients at the level of .05 (r = .153 and r = .067). 3.There were positively significant relationships between perceived severity, perceived benefits, self-efficacy, social support, and medication adherence in myocardial infarction after underwent PCI patients at the level of .05 (r = .187, .306, .171, and .319, respectively). 4. There were negatively significant relationships between perceived barriers, depression, and medication adherence in myocardial infarction after underwent PCI patients at the level of .05 (r = -.341 and r = -.266). 5. The result of hierarchical multiple regression analysis showed that 21.0 (R² = .210, p < .05) percent of the variance in medication adherence for myocardial infarction after underwent PCI patients could be explained by perceived benefits, perceived barriers, perceived susceptibility, social support, depression, self-efficacy, comorbidity, and perceived severity.