India - Household Consumer Expenditure, NSS 62nd Round, Schedule 1, July 2005 - June 2006

Sample Design
A stratified multi-stage design was adopted for the 62nd round survey. The first stage units (FSU) were the 2001 census (for Manipur, 1991 census) villages (Panchayat wards in case of Kerala) in the rural sector and Urban Frame Survey (UFS) blocks in the urban sector. The ultimate stage units (USU) were households in both the sectors.

In the case of large villages/ blocks requiring hamlet-group (hg)/ sub-block (sb) formation, one intermediate stage was the selection of two hgs/ sbs from each FSU.

Sampling frame:
The list of villages as per census 2001 (for Manipur, 1991 census was used since 2001 census list was not available) was used as frame for the rural sector and the latest available list of UFS blocks was used as frame in the urban sector. However, EC-98 was used as frame for the 27 towns with population 10 lakhs or more (as per Census 2001).

Stratification:
Within each district of a State/ UT, two basic strata were formed:
(i) rural stratum comprising of all rural areas of the district and
(ii) urban stratum comprising of all the urban areas of the district. However, if there were one or more towns with population 10 lakhs or more as per population census 2001 in a district, each of them also formed a separate basic stratum and the remaining urban areas of the district was considered as another basic stratum. There are 27 towns with population 10 lakhs or more at all-India level as per census 2001.

Formation of second-stage strata and allocation of households:
All the households listed in the selected village/ block/ segments were stratified into two second-stage strata (SSS) on the basis of land possessed by households in rural areas and household MPCE in urban areas, as follows.
1. For the rural sector, a cut-off point 'X' (in hectares) was determined at State/ UT level from NSS 48th round data in such a way that the top 20% of rural households in the State/UT, according to the estimates from that round, possessed land equal to or more than X. All the listed households possessing land less than X were placed in SSS 1 and the rest in SSS 2.
2. Similarly, in the urban sector, a cut-off point 'A' (in Rs.) was determined at State/ UT level from NSS 55th round data for each NSS region in such a way that the top 20% of the households, according to the estimates from that round, had MPCE equal to or more than 'A'. All the listed households with MPCE less than 'A' were placed in SSS 1 and the rest in SSS 2.

From each SSS, the sample households were selected by SRSWOR.

There was no deviation from the original sampling design.

Two different weights have been provided in each file in the data set. Details are as follows:-

1. Weight for each sub sample is stored in the variable name : WGT_SS
2. Combined subsample weight is stored in the variable name : WGT_SS_Combined