Variable | Year | Supplement |
---|---|---|
AHCENE | 1999 | Sample adult questionnaire |
CEH_USEM | 2012 | Child complementary and alternative medicine |
CEH_USEM | 2007 | Child complementary and alternative medicine |
EHT_USEM | 2012 | Alternative health |
EHT_USEM | 2007 | Alternative health |
EHT_USEM | 2002 | Alternative health |