| Variable | Year | Supplement |
|---|---|---|
| CSHFLUY2 | 2018 | Sample child questionnaire |
| CSHFLUY2 | 2017 | Sample child questionnaire |
| CSHFLUY2 | 2016 | Sample child questionnaire |
| CSHFLUY2 | 2015 | Sample child questionnaire |
| CSHFLUY2 | 2014 | Sample child questionnaire |
| CSHFLUY2 | 2013 | Sample child questionnaire |
| CSHFLUY2 | 2012 | Sample child questionnaire |
| CSHFLUY2 | 2011 | Sample child questionnaire |
| CSHFLUY2 | 2010 | Sample child questionnaire |
| FLUVAC2Y_C | 2021 | Sample child questionnaire |
| FLUVAC2Y_C | 2020 | Sample child questionnaire |
| FLUVAC2Y_C | 2019 | Sample child questionnaire |