India - Household Consumer Expenditure, NSS 56th Round, Schedule 1, July 2000 - June 2001

An outline of sampling design:
A stratified sampling design has been adopted for selection of the sample first-stage units (FSU's). The FSU's are villages (panchayat wards for Kerala) for rural areas and Urban Frame Survey (UFS) blocks for urban areas. The Ultimate stage units (USU's) are households which are selected by the method of circular systematic sampling from the corresponding frame in the FSU. Large FSU's are subdivided into hamlet groups (rural)/ sub-blocks (urban), that are grouped into two segments, and USU's are selected independently from each of these segments.

Sampling Frame:
List of villages (panchayat wards for Kerala) as per 1991Census and latest lists of UFS blocks are respectively used for selection of rural and urban sample FSU's. For selection of sample villages from the State of Jammu & Kashmir, list of villages as per 1981Census has been used as the sampling frame.

Sample size (FSU's):
The total sample size for Central Sample was fixed at 15032. Total State sample size was fixed at 17096 taking care of prevalent matching pattern for almost all states. Sample size for the whole round for each State/UT x Sector (i.e. rural/ urban) are allocated equally among the 4 sub-rounds. Sample FSU's for each sub-round are selected afresh in the form of 2 independent sub-samples.

Selection of FSU's:
For each sub-round, sample FSU's from each stratum are selected in the form of 2 independent sub-samples by following circular systematic sampling with (a) probability proportional to population for all rural strata other than stratum 1, and (b) equal probability for rural stratum 1 as well as all urban strata.

There was no deviation from the original sampling design.