Variable | Year | Supplement |
---|---|---|
EYEEX12M | 2022 | In both sample adult and child questionnaires |
EYEEX12M | 2020 | In both sample adult and child questionnaires |
EYEEX12M | 2019 | In both sample adult and child questionnaires |
EYEEXD12 | 1991 | Health promotion disease prevention |
OPTHAL | 1989 | Diabetes |