India - Urban Slums Survey: NSS 58th Round, Schedule 0.21, July - December 2002

A stratified sampling design was adopted for selection of the sample first-stage units (FSUs). The FSUs, for the survey on condition of slums were Urban Frame Survey (UFS) blocks in urban areas. Information on each slum, notified or non-notified, found in the entire
selected first stage units (FSUs) was collected. In some cases, area of a slum was very large and the selected FSU was part of the slum. In such cases, information was collected for the slum area falling under the sample FSU only. However, if the slum was notified, then the part of it falling under the sample FSU was considered as a notified slum. It may be noted that if a slum had cut across more than one FSU, all the slum particulars would relate to the part of the slum which fell in the selected FSU. A detailed discussion on the sample design and estimation procedure followed in the survey is given as an attachment to external resources.

There was no deviation from the original sample deviation.

A total of 3552 FSUs (i.e., UFS blocks) were selected for the Central sample in this survey, of which 3538 could be surveyed (a response rate of 99.6 percent). At the all-India level, a total of692 slums were covered in these surveyed urban blocks.
Sample weights were calculated and included in each of the data files.
Variable 'Wgt_SS' refers to Multiplier for each Subsample.
Variable 'Wgt_Combined' refers to Combined Multiplier.