| Variable | Year | Supplement |
|---|---|---|
| COG_3 | 2018 | Sample adult questionnaire |
| COG_3 | 2017 | Functioning and Disability |
| COG_3 | 2016 | Functioning and Disability |
| COG_3 | 2015 | Functioning and Disability |
| COG_3 | 2014 | Functioning and Disability |
| COG_3 | 2013 | Functioning and Disability |
| COG_3 | 2012 | Functioning and Disability |
| COG_3 | 2011 | Functioning and Disability |
| COG_3 | 2010 | Quality of life |