Details vary by country. It’s often a process where enumerators go door-to-door and interview the head of household to determine how many people live in a household. There can be some incentives to over-report the number of people, to receive more bednets. However, there is a limit on the number of nets per household (usually 3 or 4), and some of the data is independently verified by a second team of enumerators.
There is some public information about this here: https://www.givewell.org/charities/amf#Registration
Details vary by country. It’s often a process where enumerators go door-to-door and interview the head of household to determine how many people live in a household. There can be some incentives to over-report the number of people, to receive more bednets. However, there is a limit on the number of nets per household (usually 3 or 4), and some of the data is independently verified by a second team of enumerators.