In every case, participants will be contacted directly by telepho

In every case, participants will be contacted directly by telephone or email to seek their involvement. They will be provided with a participant information sheet, have any questions answered and be asked to sign a consent form before the study begins. Data collection: This will comprise in-depth interviews and focus group discussions, ALK targets done separately with

each of the main participant groups, with each group facilitated by a professional researcher and anticipated to last between 1 and 2 h. Interviews and discussions will be held at locations convenient to participants and will be audio recorded. The primary outcome: Sought from the stakeholder survey will be a comprehensive understanding of the national landscape in regard to the potential for new food policy more broadly and for salt reduction in particular. The feasibility, barriers and opportunities will be identified such that the actions required to deliver a locally applicable and acceptable

salt reduction strategy are understood. Sample size and data analysis: About 50 in-depth interviews will be conducted and three focus groups, each involving 8–12 participants, will be held. The discussion from the focus groups and in-depth interviews will be transcribed, translated if required and analysed according to key themes using NVivo software. The findings will be provided back to the participants for review and comment prior to

dissemination. The population survey The geographical sites: Sites have been selected to include slum and non-slum urban areas as well as rural communities. In North India, the urban part of the survey will be conducted in Delhi and the rural part in Faridabad, Haryana. In South India, the sites will be in Andhra Pradesh, with Hyderabad selected for the urban component and the West Godavari district for the rural component. In both cases, the areas for study have been selected on the basis of existing collaborations with the respective AV-951 communities. Recruitment of participants: This will be done using a stratified random sampling method to recruit individuals from urban, urban slum and rural areas into six age and sex groups. Before data collection begins, the Panchayat (local administrative body) will be engaged and permission to conduct the study in each area will be sought. In North India, census enumeration blocks (CEBs) and villages are sampled at random from within the study area. Households are then selected at random and an individual from within each household is selected at random until recruitment numbers in each stratum are fulfilled. In South India, the CEBs and villages are selected to be broadly representative of those in the State using a purposive process.

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