The National Sample Survey (NSS) was set up by the Government of India in 1950 to collect socio-economic data employing scientific sampling methods. Its sixty-fourth round was implemented from July 2007 to June 2008.
The 64th round of NSS is earmarked for survey on "Employment-Unemployment and Migration", "Participation and expenditure in Education" and "Household Consumer Expenditure". NSS 55th round (July 1999 - June 2000) and 49th round (January - June 1993) were the two latest rounds where migration was taken up as one of the subjects. Detailed information on education was collected for the last time in NSS 52nd round (July 1995 - June 1996), prior to which such information were collected during the 47th round of NSS (July - December 1991).
During this round, the following schedules of enquiry will be canvassed:
- Schedule 0.0 : list of households
- Schedule 1.0 : household consumer expenditure
- Schedule 10.2 : employment & unemployment and migration particulars
- Schedule 25.2 : participation and expenditure in education
Kind of Data
Sample survey data [ssd]
Unit of Analysis
- Consumer expenditure
The survey covered the whole of the Indian Union except (i) Leh (Ladakh) and Kargil districts of Jammu & Kashmir (for central sample), (ii) interior villages of Nagaland situated beyond five kilometres of the bus route and (iii) villages in Andaman and Nicobar Islands which remain inaccessible throughout the year.
The following rules regarding the population to be covered were applied in listing of households and persons:
1. Under-trial prisoners in jails and indoor patients of hospitals, nursing homes etc., are to be excluded, but residential staff therein will be listed while listing is done in such institutions. The persons of the first category will be considered as normal members of their parent households and will be counted there. Convicted prisoners undergoing sentence will be outside the coverage of the survey.
2. Floating population, i.e., persons without any normal residence will not be listed. But households residing in open space, roadside shelter, under a bridge, etc., more or less regularly in the same place, will be listed.
3. Foreign nationals will not be listed, nor their domestic servants, if by definition the latter belong to the foreign national's household. If, however, a foreign national becomes an Indian citizen for all practical purposes, he or she will be covered.
4. Persons residing in barracks of military and paramilitary forces (like police, BSF, etc.) will be kept outside the survey coverage due to difficulty in conduct of survey therein. However, civilian population residing in their neighbourhood, including the family quarters of service personnel, are to be covered. Permission for this may have to be obtained from appropriate authorities.
5. Orphanages, rescue homes, ashrams and vagrant houses are outside the survey coverage. However, persons staying in old age homes, students staying in ashrams/ hostels and the residential staff (other than monks/ nuns) of these ashrams may be listed. For orphanages, although orphans are not to be listed, the persons looking after them and staying there may be considered for listing.
DEFINITION OF A HOUSEHOLD:
A group of persons normally living together and taking food from a common kitchen will constitute a household. It will include temporary stay-aways (those whose total period of absence from the household is expected to be less than 6 months) but exclude temporary visitors and guests (expected total period of stay less than 6 months). Even though the determination of the actual composition of a household will be left to the judgment of the head of the household, the following procedures will be adopted as guidelines.
(i) Each inmate (including residential staff) of a hostel, mess, hotel, boarding and lodging house, etc., will constitute a single-member household. If, however, a group of persons among them normally pool their income for spending, they will together be treated as forming a single household. For example, a family living in a hotel will be treated as a single household.
(ii) In deciding the composition of a household, more emphasis is to be placed on 'normally living together' than on 'ordinarily taking food from a common kitchen'. In case the place of residence of a person is different from the place of boarding, he or she will be treated as a member of the household with whom he or she resides.
(iii) A resident employee, or domestic servant, or a paying guest (but not just a tenant in the household) will be considered as a member of the household with whom he or she resides even though he or she is not a member of the same family.
(iv) When a person sleeps in one place (say, in a shop or in a room in another house because of space shortage) but usually takes food with his or her family, he or she should be treated not as a single member household but as a member of the household in which other members of his or her family stay.
(v) If a member of a family (say, a son or a daughter of the head of the family) stays elsewhere (say, in hostel for studies or for any other reason), he/ she will not be considered as a member of his/ her parent's household. However, he/ she will be listed as a single member household if the hostel is listed.
Producers and sponsors
National Sample Survey Organization (NSSO)
Outline of sample design:
A stratified multi-stage design has been adopted for the 64th round survey. The first stage units (FSU) was the 2001 census villages (Panchayat wards in case of Kerala) in the rural sector and Urban Frame Survey (UFS) blocks in the urban sector. However, for the newly declared towns and out growths (OGs) in census 2001 for which UFS had not yet been done, each individual town/ OG was considered as an FSU. The ultimate stage units (USU) was be households in both the sectors. In case of large FSUs i.e. villages/ towns/ blocks requiring hamlet-group (hg)/ sub-block (sb) formation, one intermediate stage was the selection of two hgs/ sbs from each FSU.
Sampling Frame for First Stage Units:
For the rural sector, the list of 2001 census villages (Panchayat wards for Kerala) constitute the sampling frame. For the urban sector, the list of latest available Urban Frame Survey (UFS) blocks and for non-UFS towns list of such towns/ OGs was considered as the sampling frame.
Within each district of a State/ UT, generally speaking, 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, within the urban areas of a district, if there were one or more towns with population 10 lakhs or more as per population census 2001 in a district, each of them formed a separate basic stratum and the remaining urban areas of the district was considered as another basic stratum. For a few districts, particularly in case of Tamil Nadu, if total number of towns in the district for which UFS was not yet done exceeds certain number, all such towns taken together formed another basic stratum. Otherwise, they were merged with the UFS towns for stratification.
Sub-stratification in the Rural sector:
If "r" be the sample size allocated for a rural stratum, the number of sub-strata formed is "r/4?. The villages within a district as per frame were first arranged in ascending order of population. Then sub-strata 1 to "r/4" were demarcated in such a way that each sub-stratum comprised a group of villages of the arranged frame and have more or less equal population.
Sub-stratification in the Urban sector:
If "u" be the sample size for a urban stratum, "u/4" number of sub-strata were formed. The towns within a district, except those with population 10 lakhs or more and also the non-UFS towns, were first arranged in ascending order of population. Next, UFS blocks of each town were arranged by IV unit no. × block no. in ascending order. From this arranged frame of UFS blocks of all the towns, "u/4? number of sub-strata were formed in such a way that each sub-stratum had more or less equal number of FSUs. For towns with population 10 lakhs or more, the urban blocks were first arranged by IV unit no. × block no. in ascending order. Then "u/4? number of sub-strata were formed in such a way that each sub-stratum had more or less equal number of blocks. All non-UFS towns taken together within the district formed one sub-stratum.
Total sample size (FSUs):
12688 FSUs for central sample and 13624 FSUs for state sample have been allocated at all-India level.
Allocation of total sample to States and UTs:
The total number of sample FSUs is allocated to the States and UTs in proportion to population as per census 2001 subject to a minimum sample allocation to each State/ UT. While doing so, the resource availability in terms of number of field investigators had been kept in view.
Allocation of State/ UT level sample to rural and urban sectors:
State/ UT level sample was allocated between two sectors in proportion to population as per census 2001 with 1.5 weightage to urban sector subject to the restriction that urban sample size for bigger states like Maharashtra, Tamil Nadu etc. should not exceed the rural sample size. A minimum of 8 FSUs was allocated to each state/ UT separately for rural and urban areas. Further the State level allocation for both rural and urban have been adjusted marginally in a few cases to ensure that each stratum gets a minimum allocation of 4 FSUs.
More information on the sampling methodology is available in the document " Instructions to Field Staff - Volume-I"
Dates of Data Collection
Data Collection Mode
Data Collection Notes
The period of survey was of one year duration starting on 1st July 2007 and ending on 30th June 2008. The survey period of this round was divided into four sub-rounds of three months' duration each as follows:
- sub-round 1 : July - September 2007
- sub-round 2 : October - December 2007
- sub-round 3 : January - March 2008
- sub-round 4 : April - June 2008
Schedule 0.0 is meant for listing all the houses and households residing in the sample first stage unit (FSU) or sample hamlet-groups/ sub-blocks in case of large FSUs. Some household information like household size, relative affluence, occurrences of migration, whether any household member in the age-group of 5 - 29 years enrolled at primary and above level, MPCE etc. is also be collected in this schedule. These auxiliary information will be used for grouping the households into different second-stage-strata (SSS).
Schedule 1.0 consists of several blocks to obtain detailed information on the expenditure incurred on domestic consumption and other particulars of the sample household. There are 15 blocks numbered 0 to 14.
The 64th round survey is the nineteenth in the annual series of surveys of household consumer expenditure.
What is new in the schedule:
- Columns for recording particulars of participation in public works have been dropped from Block 4 of the schedule.
- Covered area (Block 3, item 11) will not be recorded in square metres. It will be recorded in square feet, as was the practice before the 59th round.
- An item (174) for sunflower/soyabean oil and an item (175) for rice bran oil have been introduced in the edible oil sub-group of Block 5.
- An item (302) has been introduced in Block 5 to record number and imputed value of (i) meals received as assistance from Government, charitable organization, etc. and (ii) meals received as perquisites or as payment in kind. The item (303) for cooked meals purchased will have its usual meaning.
- Separate items for petrol (353) and diesel (354) have been introduced in Block 6 (fuel for cooking, lighting and other purposes excluding conveyance). In Block 10, petrol for vehicle (508) has been made a
separate item in the conveyance sub-group.
- The item (400) for books and journals and the item (401) for newspapers and periodicals (Block 9) will include second-hand purchases.
- An item (480) "insurance premium: other" has been introduced in the "consumer services excluding conveyance" sub-group of Block 10. It will cover non-life insurance premium other than medical insurance.
- If payments for education and accommodation enjoyed by a household are regularly made by a person belonging to another household, they will be accounted in the household using the educational facilities and/or lodgings, and not the household making the payment.
Use of the dataset must be acknowledged using a citation which would include:
- the Identification of the Primary Investigator
- the title of the survey (including country, acronym and year of implementation)
- the survey reference number
- the source and date of download
National Computer Center of india
Disclaimer and copyrights
The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses.