Variable | Year | Supplement |
---|---|---|
CHEW20 | 2000 | Sample adult questionnaire |
CHEW20 | 1998 | Sample adult prevention |
CHEW20X | 1987 | Cancer epidemiology |
CHEWEV20 | 2010 | Sample adult cancer |
CHEWEV20 | 2005 | Sample adult cancer |
CTOBAC20 | 1992 | Cancer control |
UCT20EL | 1991 | Health promotion disease prevention |
USECHEWT | 1994 | Year 2000 |
USEDCH20 | 1987 | Cancer control |