The address ID is used to link house parcels to population database, Sultanabad, Karachi. The unique census ID (address ID) of the household assigned to each parcel is shown inside the house parcel (the map in right side). The ID is used to link household census and disease surveillance data.
Ali et al. International Journal of Health Geographics 2004 3:20 doi:10.1186/1476-072X-3-20