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Table 1 Schedule of study visits, assessment and procedures

From: The Salt Swap intervention to reduce salt intake in people with high blood pressure: protocol for a feasibility randomised controlled trial

 

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)