Sampling
Sampling Procedure
The sampling frame derived from the Census of Population 2000 was used in the survey design. The institutional facilities such as hostels, army barracks, boarding houses, etc. were excluded from the frame and a truncated frame comprising ordinary households was prepared. Considering the socio-economic stratification of the main items canvassed through the survey it was considered that Mongolia should be classified into urban, rural and regional stratifications. Accordingly, Mongolia was divided into urban and rural areas and Ulaanbaatar, Central, East, West and Khangai regions. A two stage stratified random sampling design was adopted with baghs (census enumeration areas) as primary sampling units (PSUs) and households as secondary sampling units (SSUs). The frame which had baghs grouped by district and province in effect provided an implicit stratification for the PSUs for the probability proportional to size systematic random sampling procedure adopted in the selection of the PSUs. In order to capture seasonal variations in labour supply and demand a two stage stratified random sampling design was adopted to enable the preparation of estimates for 9 strata comprising the capital city of Ulaanbaatar, and the urban and rural sectors of the 4 geographic regions into which the country is divided. The survey sampled 3,200 households or more than 12000 persons in each quarter that was sufficiently large for the preparation of statistically reliable estimates on key variables based on the data from the 4 quarterly rounds. The questionnaire was designed to capture labour supply and demand under both currently active and usually active concepts based on a short reference period of 1 week before the survey and a long reference period of one year considering the large proportion of the working population that was engaged in agriculture and livestock production activities.
Deviations from Sample Design
None reported
Response Rate
The survey sampled 12,800 households out of which 12787 responded to the questionnaire, thus achieving a response rate of 99.9%. The sample population enumerated through the survey was 49,948.
Weighting
The design weights are used to compensate for differences in the selection probabilities. The weight for the PSU is inversely proportional to its selection probability.
See the details information on the sample weighting in Appendix 3 of Main Report that is attached as an external resourse.
