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Previous documents

Waves 1 to 7:
Basically, the variables regarding personal and household incomes are constructed in an identical way in all waves (documents only in english):

Waves 4 to 7:
In 2002, a few additional income questions were asked. This allows for a more reliable construction of the income variables (document seulement en français):

Waves 6 and 7:
In 2004, a small modification of the income questionnaire was undertaken: e.g. a few additional questions regarding child allowances and a simplification of the total income question (document seulement en français):