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Codes

SAMPLE is a four-digit numeric variable.

Description

SAMPLE indicates the dataset to which the case belongs. Some surveys include data from more than one year (YEAR) and other datasets combine respondents from more than one survey (SURVEY).

Comparability

SAMPLE is comparable across all years.

Universe

  • All persons.

Availability

  • 1965, 1975, 1985, 1993, 1995, 1998, 2003-2012

Flags

This variable has no flags.