SURVEY AND DATASET FOR STUDY ON DEPOPULATION IN THE "HOLLOWED-OUT SPAIN"

To configure the sample, we selected four inland autonomous communities, Aragón, Castilla and León, Castilla-La Mancha and Extremadura, all of which border the central autonomous region where Madrid, the capital, is situated. This selection was made as depopulation is a phenomenon with a particular impact on inland areas of Spain. The total number of individuals included in the universe from which the sample was drawn was 3,493,623. The survey was contracted out to an agency and was conducted by telephone during the second half of December 2019. Stratified sampling was applied to obtain the sample, based on the number of inhabitants of the municipalities. The overall sample comprises 514 observations, which represents a 4.32% margin of error for a confidence level of 95% and a variance of 0.25.