| Variable | Year | Supplement |
|---|---|---|
| HEAR_1 | 2011 | Functioning and Disability |
| HEAR_1 | 2010 | Quality of life |
| HEAR_1R | 2018 | Sample adult questionnaire |
| HEAR_1R | 2017 | Functioning and Disability |
| HEAR_1R | 2016 | Functioning and Disability |
| HEAR_1R | 2015 | Functioning and Disability |
| HEAR_1R | 2014 | Functioning and Disability |
| HEAR_1R | 2013 | Functioning and Disability |
| HEAR_1R | 2012 | Functioning and Disability |