- some datasets have information on head and spouse only
- some datasets have information on a limited amount of persons
- some datasets have no information on children
- some datasets have been revised (major
revisions are announced, minor revisions are not - all revisions are
listed in the
revision notes list)
- all income amounts are in national currencies
- some datasets have
net income variables only
(net of taxes and
contributions)
- some datasets have income in hundreds or thousands of national currency units
- the contents of the weights can differ from dataset to dataset
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