| Variable | Year | Supplement |
|---|---|---|
| COGFRQDFF_A | 2021 | Sample adult questionnaire |
| COGFRQDFF_A | 2020 | Sample adult questionnaire |
| COGFRQDFF_A | 2019 | Sample adult questionnaire |
| COG_2 | 2018 | Sample adult questionnaire |
| COG_2 | 2017 | Functioning and Disability |
| COG_2 | 2016 | Functioning and Disability |
| COG_2 | 2015 | Functioning and Disability |
| COG_2 | 2014 | Functioning and Disability |
| COG_2 | 2013 | Functioning and Disability |
| COG_2 | 2012 | Functioning and Disability |
| COG_2 | 2011 | Functioning and Disability |
| COG_2 | 2010 | Quality of life |
| TROBTHG | 1984 | Study on aging |