codebook / nhanes2018 / SMD630

SMD630 // How old were you when you smoked a whole cigarette for the first time?

→ use this variable in analysis ← back to dataset

attributes

datasetnhanes2018 · NHANES 2017-2018 Cycle
typecategorical
role
data fileSMQ_J
keywords

Coded values

codemeaning
8 to 17Range of Values
66 years or less