Data collection schedule
| Questionnaires and measurements | Screening visit | Baseline visit | 3-month visit | 6-month visit | 9-month visit | 12-month visit | 18-month visit |
| Primary outcome measures | |||||||
| Glycosylated haemoglobin A1c | X | X | X | X | X | X | |
| Resource utilisation/cost | X | X | X | X | X | X | |
| Secondary outcome measures | |||||||
| Blood pressure | X | X | X | X | X | X | |
| LDL cholesterol | X | X | X | X | X | X | |
| Quality of life (SF-12) | X | X | X | X | |||
| Behavioural skills (SDSCA) | X | X | X | X | X | X | |
| Medication adherence | X | X | X | X | X | X | |
| Delay discounting | X | X | X | ||||
| Covariates | |||||||
| Patient demographics | X | ||||||
| Social support | X | ||||||
| Health literacy | X | ||||||
| Depression (PHQ-9) | X | X | X | X | X | X | |
| Medical comorbidity | X |
LDL, low-density lipoprotein; PHQ-9, Patient Health Questionnaire-9; SDSCA, Summary of Diabetes Self-Care Activities; SF-12, 12-item Short Form Survey.