Eligibility criteria for market site, street food consumers and vendors
A market site was eligible for the study if it had at least 15 street food vendors. Regular street food consumers: A consumer was eligible for the study if he/she met the following criteria: being aged 25–64 years; consuming at least three lunches per week at the same street food vendor; having no plans to move out of the study area in the next 12 months; and have been consuming street food for not less than a year. Lactating mothers and pregnancy women were not eligible. Eligibility criteria for street food vendors included being aged 18 or above; has been vending food at the current site for at least 12 months; has at least seven customers who have been consuming at least three lunch meals per week for at least 3 months; is ready to implement the components required for an intervention; and will continue vending food at the same market site for at least another 12 months.