Two stage stratified cluster sampling method was used in this survey. In the first stage sampling unit was clusters composing of the average 100 addresses for rural and urban settlements. In the first stage, 2 058 clusters were selected totally.

The clusters were selected from each design stratum using a probabilistic selection method proportional to its size. The number of addresses in each cluster constituted the cluster size.

In the second stage, 10 households were selected systematically from each selected cluster.
The survey is planned to be applied to all individuals who are 15 years of age and over in selected households.

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