Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.
From the National Survey on Drug Use and Health:
How old were you the first time you used snuff?
How old were you the first time you used chewing tobacco?
Initiation of smokeless tobacco use in the 12 months prior to date of interview was identified by examining the youth’s interview date, birth date, and initiation date of first tobacco use. Smokeless tobacco use includes snuff and chewing tobacco. Persons who responded that they have used either snuff or chewing tobacco for more than 12 months are not included in this measure.
Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.
During regular data collection and processing checks, errors were identified in the NSDUH data. These errors affected the data for Pennsylvania (2006-2010) and Maryland (2008-2009). These errors had minimal impact on the national estimates and no effect on direct estimates for the other 48 states and the District of Columbia. Comparing estimates for Pennsylvania, Maryland, the mid-Atlantic division, and the Northeast region were of most concern. However, the baseline and target values did not change as a result.
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