The family is one of the key units of society ... and within the family the well-being and happiness of every individual is important. For the management of public policy, however, the community ... or neighborhood or block ... is easier to use as an indicator of progress and the effectiveness of interventions.

There are some datasets that are best compiled using the family as the unit because this is the best place to identify impact ... as for example, the case of malaria, where interventions are undertaken in the community as a whole, and the impact is best observed within the individual families.