CONSORT chart showing the phases of a parallel cluster randomised trial of two groups include enrolment, intervention allocation, follow-up and data analysis.
RECRUITMENT
*Number of food consumers considered were the regular street food consumers i.e. those who consumed three or more lunches per week from the same food vendors; # stands for “number”.The recruitment of study participants including seeking consent took place from November 2018 to March 2019. The process involved awareness creation and sensitization of street food consumers and vendors with information education communication (IEC) such as brochures and banners. In this phase the principle investigator together with the food vendors and their leaders were also screening eligible participants. Eligible vendors were asked to provide the names and contact details of their regular clients. This was possible because regular consumers typically call vendors to have food delivered to their workplace. Vendors were asked to list all of their regular customers to avoid selection bias; vendors were informed in advance that only consented customers will be included in the study. With the customers’ list, the principal researcher approached each of the customers and gave information about the study and sought informed consent. Finally, a list of eligible and consented participants per cluster and vendor was obtained. All eligible and consenting participants were informed about the start and end date of the intervention. Specifically, the intervention period lasted for three months from 1