Screening phone call | Enrolment and baseline (Visit 1) | Allocation | Intervention (Visit 2) | Accompanied shop (Visit 3) | Followup (Visit 4) | |
---|---|---|---|---|---|---|
Time point (weeks from baseline) | −1 | 0 | 2 | 2–3 | 4–9 | 9–10 |
Responsibility | Central research team | Central research team | Independent researcher | Healthcare professional | Central research team | Central research team |
STUDY PROCEDURES | ||||||
 Eligibility assessment | ✓ | |||||
 Informed consent | ✓ | |||||
 Baseline assessment including: | ✓ | |||||
  Blood pressure | ✓ | |||||
  Height and weight | ✓ | |||||
  Medical history and medications | ✓ | |||||
  Shopping and diet questionnaire | ✓ | |||||
  Instruction on baseline run-in data collection | ✓ | |||||
 Urine sample collection | ✓ (+ up to 2 weeks) | |||||
 Randomisation | ✓ | |||||
 Intervention delivery | ✓ | |||||
 Accompanied shop and interview | ✓ | |||||
 Follow-up outcome measures including: | ✓ | |||||
  Blood pressure | ✓ | |||||
  Medical history and medication review | ✓ | |||||
  Intervention acceptability questionnaire | ✓ | |||||
  Urine sample collection | ✓ ✓ (+ up to 7 days) |