Fig 1.

The Four Domain Food Insecurity Scale (4D-FIS). The 4D-FIS covers the four domains of the food access dimension of food insecurity: quantitative (3 items), qualitative (6 items), psychological (3 items), and social (4 items). For the quantitative, qualitative, and psychological items, response options are often, sometimes, rarely, and never. Social items used response options of agree a lot, agree a little, disagree a lot, and disagree a little. All items included blinded responses of do not know and refused. This scale is intended to be interviewed-administered and the 4D-FIS interview script is available by request from the corresponding author.