A comparison of EPI sampling, probability sampling, and compact segment sampling methods for micro and small enterprises

TitleA comparison of EPI sampling, probability sampling, and compact segment sampling methods for micro and small enterprises
Publication TypeJournal Article
Year of Publication2012
AuthorsChao, Li-Wei, Helena Szrek, Karl Peltzer, Shandir Ramlagan, Peter Fleming, Rui Leite, Jesswill Magerman, Godfrey B. Ngwenya, Nuno Sousa Pereira, and Jere R. Behrman
JournalJournal of Development Economics
Volume98
Pagination94-107
ISBN Number0304-3878
Accession NumberPMID: 22582004
AbstractFinding an efficient method for sampling micro- and small-enterprises (MSEs) for research and statistical reporting purposes is a challenge in developing countries, where registries of MSEs are often nonexistent or outdated. This lack of a sampling frame creates an obstacle in finding a representative sample of MSEs. This study uses computer simulations to draw samples from a census of businesses and non-businesses in the Tshwane Municipality of South Africa, using three different sampling methods: the traditional probability sampling method, the compact segment sampling method, and the World Health Organization's Expanded Programme on Immunization (EPI) sampling method. Three mechanisms by which the methods could differ are tested, the proximity selection of respondents, the at-home selection of respondents, and the use of inaccurate probability weights. The results highlight the importance of revisits and accurate probability weights, and the lesser effect of proximity selection on the samples' statistical properties.
URLhttp://dx.doi.org/10.1016/j.jdeveco.2011.08.007
PMCIDPMCID: PMC3347860