Data layout of this round is not in accordance with the questionnaire. The reports have been prepared by Survey Design & Research Division (SDRD) of NSSO under the guidance of the Governing Council, NSSO. The collected data were processed by the Data Processing Division of NSSO and tabulated by the Computer Centre of Department of Statistics. The field work for the survey was conducted, as usual, by the Field Operations Division of the Organisation. To minimise recall errors, a very detailed item classification was, as usual, adopted to collect information. The household consumer expenditure schedule, used for the survey, collected information on quantity and value of household consumption with a reference period of “last 30 days” for some items of consumption. The field operations of the 57th NSS round commenced on 1st July 2001 and continued up to 30th June 2002.
Nowadays every round of NSS includes a consumer expenditure survey (CES), giving rise to an annual series of consumption data. Apart from these quinquennial surveys, the NSSO collected information on consumer expenditure from a smaller sample of households since 42nd round (July 1986 - June 1987). Surveys on consumer expenditure are being conducted quinquennially on a large sample of households from the 27th round (October 1972 - September 1973) onwards. The surveys are conducted through household interviews, using a random sample of households covering practically the entire geographical area of the country. The NSSO conducts regular consumer expenditure surveys as part of its “rounds”, each round being normally of a year's duration and covering more than one subject of study. Series InformationThe National Sample Survey Organisation (NSSO) has been set up by the Government of India in 1950 to collect socio-economic data employing scientific sampling methods.