摘要：Asthma problems are often linked to treatment management factors which include the non-maximal behavior of the patients and doctors. The adherence concept emphasizes a strong commitment between physicians and patients to achieve maximum behavior towards the treatment. This study aimed to construct a model of adherence to treatment of patients with asthma and also aimed to set a valid and reliable adherence measurement tool that might be applied to patients with asthma, particularly those who live in Medan-Indonesia.The study was quantitative research employed a cross sectional approach. The samples were 200 adult patients with asthma who receive standard asthma medications, patients with the stable condition and do not suffer from severe asthma or other comorbidities. The study performed a consecutive sampling of the technique which was obtained from physician's data (general/lung specialist). Data were analyzed by performing confirmatory analysis through Structural Equation Modelling analysis. The study produced a measurement model of asthma patients' adherence to the treatment among those who live in Medan. The study found that the asthma patients who live in Medan have good psychometric value (valid, reliable and fit to model): adherence I (beliefs, knowledge, and attitudes), adherence II (doctor-patient communication, actions, family support).
