Variable | Year | Supplement |
---|---|---|
CHEWTBC | 1994 | Year 2000 |
SNUFEV20 | 2010 | Sample adult cancer |
SNUFEV20 | 2005 | Sample adult cancer |
SNUFF20 | 2000 | Sample adult questionnaire |
SNUFF20 | 1998 | Sample adult prevention |
SNUFF20 | 1992 | Cancer control |
SNUFF20 | 1987 | Cancer control |
SNUFF20X | 1987 | Cancer epidemiology |
USNUFF20 | 1991 | Health promotion disease prevention |