Background Variables

Merging files:
-Please note that when merging the Background Variables with other survey data one should only use the key variable nomem_encr. Using nohouse_encr can lead to missing data due to household changes. 
-Choose the Background Variables corresponding to the month(s) of the data collection of your survey, not the most recent background variables.

The variables in these data files are presented per person, including variables that contain information on the entire household. These data represent a snapshot of the situation at the end of the field work period concerned.

• Variables at household level: lftdhhh, aantalhh, aantalki, partner, woonvorm, woning, sted (updated since August 2022), nettohh_f, brutohh_f, werving (published from April 2011 onwards), simpc
• Variables at individual level: geslacht, gender (published from February 2022 onwards), positie, gebjaar, leeftijd, lftdcat, burgstat, belbezig, brutoink, brutoink_f, nettoink/netinc, nettoink_f, brutocat, nettocat, oplzon, oplmet, oplcat, herkomstgroep (published from October 2010 onwards), doetmee