MCD180k // How old {were you/was SP} when {you were/s/he was} first told {you/s/he} . . .had chronic bronchitis?| 数据集 | nhanes2018 · NHANES 2017-2018 Cycle |
| 类型 | categorical |
| 角色 | |
| 数据文件 | MCQ_J |
| 关键词 |
| 编码 | 含义 |
|---|---|
17 to 79 | Range of Values |
16 | 16 years or younger |
80 | 80 years or older |