Causal relationships among self-management behaviors, symptom control, health-related quality of life and the influencing factors among Thai adolescents with asthma

Objective: To examine causal relationships among asthma self-management behaviors, asthma symptom control, health-related quality of life and the influencing factors among Thai adolescents. Methods: A cross-sectional study was conducted using convenience sampling. A total of 240 adolescent-caregiver dyads from three tertiary hospitals in Bangkok, Thailand was ultimately included. Interviews and self-administered questionnaires assessing health-related quality of life, asthma symptom control, asthma self-management behaviors, health literacy, depression, comorbidities, family support, peer support, home environmental management, and relationships with health care providers were administered between November 2020 and July 2021. A hypothesized model based on the revised self- and family-management framework was proposed. Data were analyzed using descriptive statistics and path analysis. Results: It was shown that the proposed model was a good fit for the empirical data and accounted for 67.2% of the variance in health-related quality of life. Depression and asthma symptom control directly affected quality of life (β = −0.132, P