. 2017 Feb 26;62(5):531–540. doi: 10.1007/s00038-017-0949-6

Table 1.

Data sources by country and year

Country	Year	Population		Deaths		Self-rated health
Country	Year	Source	Year	Source	Year	Source	Year
Belgium	2001	Census	2001	Register	2002	Census^a	2001
The Netherlands	2001	Register	2001	Register	2001	Survey data: Permanent Survey on the Living Situation (POLS) and Health Survey^b	2001^c
The Netherlands	2011	Register	2011	Register	2011		2011^c
England and Wales	2001	Census	2001	Death certificates	2001	Census	2001
England and Wales	2011	Census	2011	Death certificates	2011	Census	2011

^aData from the Belgian Health Interview Survey not used due to the large amount of missing data

^bThe Health Survey substituted the part on health of the POLS after 2009, but no major changes were made to the question and answer choices regarding self−rated health

^cData from the different surveys in the Netherlands were aggregated around the years 2001 (POLS 1999−2003) and 2011 (POLS 2009, Health Survey 2010−2013) to increase the sample size