40 Geographic unit - Spain

Statistical inference possible at the regional level:No
Is your country part of the NUTS nomenclature or Eurostat's statistical regions for EFTA and Candidate countries?Yes

Suggested grouping of the regional categories:

The Spanish sample is stratified by level 2- NUTS but the small number of interviews in some of them prevent for making inference because of the big margin of error. There are only 6 NUTS with more than 100 interviews that can be used for inference. These NUTS and their corresponding margin of error for a 95% confidence level in the estimation of proportions are: ES61 Andalucía (0.053); ES30 Madrid (0.062); ES51 Cataluña (0.068); ES52 Valencia (0.079); ES41 Castilla y León (0.100); ES11 Galicia (0.107).There is not only one way to group the Spanish NUTS. It would depend on the goal of the research. It's not wise to suggest a general way of grouping.

By the way, NUTS ES63 and ES64 (the autonomous cities of Ceuta and Melilla) were collapsed in a single stratum because the scarce population of 15 years or more. The only PSU selected in this stratum belongs to Melilla.

NUTS level in data fileNUTS 2

Geographic units in dataset: