Variable | Year | Supplement |
---|---|---|
COPDEV | 2018 | Sample adult questionnaire |
COPDEV | 2017 | Sample adult questionnaire |
COPDEV | 2016 | Sample adult questionnaire |
COPDEV | 2015 | Sample adult questionnaire |
COPDEV | 2014 | Sample adult questionnaire |
COPDEV | 2013 | Sample adult questionnaire |
COPDEV | 2012 | Sample adult questionnaire |
COPDEV_A | 2022 | Sample adult questionnaire |
COPDEV_A | 2021 | Sample adult questionnaire |
COPDEV_A | 2020 | Sample adult questionnaire |
COPDEV_A | 2019 | Sample adult questionnaire |