Centre Sampling Technique in Foreign Migration Surveys: A Methodological Note


We address in this article the problem of performing a statisticalsurvey of a group of individuals present in a certain populationwhen information about the complete list of the members is missingor partially unknown. This problem is particularly relevant in immigrationanalysis, where many of the individuals are possibly illegal migrantsand therefore not formally registered or accounted for in officialstatistics. We propose a sample method that integrates informationprovided by specific surveys and subjective knowledge available tothe researcher about the geo-social reality of interest.

Journal of Official Statistics
Gianluca Baio
Gianluca Baio
Professor of Statistics and Health Economics