| Variable | Year | Supplement |
|---|---|---|
| AASMMED1 | 2013 | Sample adult questionnaire |
| AASMPMED | 2018 | Sample adult questionnaire |
| AASMPMED | 2008 | Sample adult questionnaire |
| AASMPMED | 2003 | Sample adult questionnaire |
| ASINHALE3M | 2020 | In both sample adult and child questionnaires |
| CASMMED1 | 2018 | Sample child questionnaire |
| CASMMED1 | 2013 | Sample child questionnaire |
| CASMPMED | 2008 | Sample child questionnaire |
| CASMPMED | 2003 | Sample child questionnaire |