the model
1Household food energy requirement. In large scale analysis only access to food energy is considered, not other nutrients. the value used is usually 2100 kcal person/ day the average requirement per person for a population with population pyramid typical of a developing county although this may be increase or decrease under some condition e.g. very cold locations, remote locations where there a difficulties supplying food aid . In many places 2100 kcal/person/day exceeds the food energy available to the poorest households even in a good year and the use of this value overestimates the deficit. in practice this can be ignored as it allows a margin to allow for the inaccurate targeting of food aid or other welfare assistance