Description
PRELIMINARY VARIABLE: Variable description not yet updated.
[Placeholder variable description: How fast needed to strengthen heart and lungs].
Comparability
No information available.Universe
- 1985: Sample persons age 18+.
- 1990: Sample persons age 18+, except those who stated no days of exercise were needed to strengthen the heart and lungs.
Codes and Frequencies
Availability
- 1985, 1990
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Weights
- 1985, 1990 : SAMPWEIGHT
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