Table 1 Patients’ variables and measurement tools used at each data collection time point
Variable | Measurement tools/questions | Baseline | 6 mth | 12 mth |
|---|---|---|---|---|
Demographic measures | Sex, date of birth, ethnicity, education level, job, health insurance, marital status, annual income, family population composition | √ |  |  |
Health status | Duration, therapeutic regimen, complications and co-morbidities, hospital visits due to diabetes | √ |  | √ |
Behavior | Adherence to medication (Morisky Scale), activities of self-management (SDSCA) | √ | √ | √ |
Psychosocial variables | Risk Perception Survey–Diabetes Mellitus (RPS-DM), perceived family support (DFBC), diabetes-related knowledge, source of diabetes-related knowledge, perceived benefits and barriers to diabetes self-care | √ | √ | √ |
Biomedical measures | HbA1c, weight, height, waist circumference, hip circumference, blood pressure, BMI, blood glucose (fasting plasma glucose and 2 h post-load glucose) | √ | √ | √ |