서베이앤헬스폴리시리서치센터

Woo, Y. J., and Kim, S. W. (2012). “Using new IT in area sampling: an experience in Korea,” Paper presented at the Joint Statistical Meetings, San Diego, California.

Abstract

When there is no sampling frame on the households, the area sampling procedure provides a proper sampling frame and allows the sampling of household units in equal probability. Thus, we can obtain reliable estimates without a sampling frame. Despite these advantages, however, it has been hard for academic or non-academic researchers in Korea to conduct the surveys using area sampling because the list of enumeration districts is not open to the public, except for the samplers working in official statistics. But now area sampling in Korea, where information technology is highly advanced, is viable owing to the development of the Internet that enables researchers to get more precise information on the number of dwellings or structures, their location and address, etc. Based on this information, we can easily and correctly use the area sampling procedure. This study shows how to conduct area sampling by using commercial maps, street view services, and new address information map services offered on the Internet. We also present how to use the information on small areas available on the website of Statistics Korea. This methodology would lead to obtaining more reliable estimates.

Key words: equal probability selection, sampling frame, map service, view service

Note. The presentation is based on the pilot study for the Seoul Economy and Health Survey, whose target population is the households in Jung-Gu, Seoul.