`DUQ400U` // How long ago has it been since you last used a needle to inject a drug not prescribed by a doctor?

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attributes

dataset	nhanes2018 · NHANES 2017-2018 Cycle
type	`categorical`
role
data file	`DUQ_J`
keywords

Coded values

code	meaning
`1`	Days
`2`	Weeks
`3`	Months
`4`	Years