India - Drinking Water, Sanitation, Hygiene and Housing Condition NSS 76th Round : July 2018- December 2018

Sample Design
Formation of sub-units (SUs):
Rural areas: In usual NSS rounds, large sample villages are divided into a number of
sub-divisions called hamlet-groups based on population (approximate present population) of
the villages during survey. This procedure is modified in this round. During this round, a
rural village will be notionally divided into a number of sub-units (SU) of more or less equal
population during the preparation of frame. Census 2011 population of villages will be
projected by applying suitable growth rates and the number of SUs to be formed in a village
will be determined apriori.
The above procedure of SU formation will be implemented in the villages with
population more than or equal to 1000 as per Census 2011. In the remaining villages, no SU
will be formed. The number of SUs to be formed in the villages (with Census 2011 population 1000
or more) of the frame will be decided before selection of the samples following the criteria
given below:
projected population of the village no. of SUs formed
less than 1200 1
1200 to 2399 2
2400 to 3599 3
3600 to 4799 4
4800 to 5999 5
.......and so on ....

Special case:
1.4.1.4.1 For rural areas of (i) Himachal Pradesh, (ii) Sikkim, (iii) Andaman & Nicobar
Islands, (iv) Uttarakhand (except four districts Dehradun, Nainital, Hardwar and Udham
Singh Nagar), (v) Punch, Rajouri, Udhampur, Reasi, Doda, Kishtwar, Ramban, Ladakh
region (Leh and Kargil districts) of Jammu and Kashmir and (vi) Idukki district of Kerala,
numbers of SUs to be formed in a village will be determined in such a way that each SU
contains 600 or less projected population. Further, SUs will not be formed in the villages in
the above mentioned districts/States with population less than 500 as per Census 2011. In the
remaining villages the number of SUs to be formed for these States/districts will be as
follows:
projected population of the village no. of SUs to be formed
less than 600 1
600 to 1199 2
1200 to 1799 3
1800 to 2399 4
2400 to 2999 5
.......and so on ....
For rural parts of Kerala, similar procedure as mentioned in para 1.4.1.3 above will
be adopted with the modification that the SUs will be formed within Panchayat Wards
instead of villages.

Outline of sample design: A stratified two stage design will be adopted for the 76th
round survey. The first stage units (FSU) will be villages/UFS blocks/sub-units (SUs) as per the situation. The ultimate stage units (USU) will be households in both the sectors.