Protocol adherence
fifty-four
Complete protocol adherence was defined as submitting a baseline questionnaire, submitting grocery receipt data at least once per week for each of the 5 weeks of the study, and completing the exit survey. Sixty-five participants (100 %) submitted at least some receipt data after randomisation, 55 (85 %) submitted grocery receipt data during all 5 weeks of the study and 62 (95 %) completed the exit survey. All participants submitted Week One (baseline) receipt data, 64 submitted Week Two and Three receipts (99 %), 58 submitted Week Four receipts (89 %) and 62 submitted Week Five receipts (95 %). Of the fifty-five participants that submitted all grocery receipts, fifty-four also completed the exit survey; thus, 83 % of people had complete protocol adherence. See also Fig. 
CONSORT flow diagram: implementation of behavioural grocery intervention