TABLE 1.

Factsheet of the survey.

Study	CIS Nº 3123 Spanish general social survey
Scope	National (excluding Ceuta and Melilla)
Universe	Spanish population, both sexes, 18 years and over
Sample	5,290 interviews
Allocation	Non-proportional
Sampling points	523 municipalities and 48 provinces
Sampling procedure	Two stages and stratified by cluster. The selection of primary sampling units (sections) is proportional to the resident population, and the selection of final units (individuals) is carried out through a systematic selection of individuals residing in the area by house number
Sampling error	For a confidence level of 95.5% (two sigma) and where P = Q, the real error is ±1.4% for the whole sample and for the simple random sampling association
Date	From 22 December 2015 to 12 April 2016
URL	http://www.cis.es/cis/opencm/ES/1_encuestas/estudios/ver.jsp?estudio=14252

Source: The authors based on CIS, study 3,123 (2016).