Additional file 5 of The feasibility and acceptability of a rewards system based on food purchasing behaviour in secondary school cashless canteens: the Eat4Treats (E4T) cluster feasibility, non-randomised, controlled intervention study

Additional file 5: Table S3. Sample questions from focus group topic guide exploring pupil experiences of taking part in Eat4Treats. Table S4. Sample questions from interview topic guides exploring school staff experiences of taking part in Eat4Treats. Sample questions from focus group and interview topic guides exploring experiences of taking part in the study.