Variable | Year | Supplement |
---|---|---|
SMKQTD | 2003 | Sample adult questionnaire |
SMKQTD | 2002 | Sample adult questionnaire |
SMKQTD | 2001 | Sample adult questionnaire |
SMKQTD | 2000 | Sample adult questionnaire |
SMKQTD | 1999 | Sample adult questionnaire |
SMKQTD | 1998 | Sample adult questionnaire |
SMKQTD2 | 1997 | Sample adult questionnaire |