| Variable | Year | Supplement |
|---|---|---|
| THERA12M | 2023 | In both sample adult and child questionnaires |
| THERA12M | 2022 | In both sample adult and child questionnaires |
| THERA12M | 2020 | In both sample adult and child questionnaires |
| THERA12M | 2019 | In both sample adult and child questionnaires |