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Codes and Frequencies

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WAVE indicates whether the record came from the first, second, third, or fourth wave of the 1975 survey.

Users should take caution with sample weights since they were created for the full sample and may result in unbalanced distributions when only one wave of data is used.


This variable is only available in 1975.


  • 1975 1975: All persons.


  • 1975


This variable has no flags.