The population and housing census is used as frame for NIHSP. This frame is list of enumeration areas (EAs) delineated during population and housing census cartographic work. These EAs are geo referenced. For sample selection in the PSU’s probability proportional to size (PPS), size being the number of households in the EAs, is used.
Initially 500 primary sampling units were covered. Now the primary sampling units gradually increased to 2290 PSUs.
The first National Agricultural Sample Census (NASCE) was conducted in 2001 by CSA. The NASCE was conducted on a sample basis with high sampling rate. As part of agricultural census, livestock census in pastoral areas was conducted.
The agricultural census was used as master frame for the integrated agricultural surveys conducted after agricultural census until the 2007 population census.