YEAR OF FIRST SNUFF USE - RECODE
(CG26A) NOTE: For respondents whose age at first use
was equal to or 1 year less than their current
age, responses from questions CG26a, CG26b,
CG26c, CG26d, and associated consistency
checks were used to create the following
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Taken from: National Survey on Drug Use and Health, 2007.