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2005 National Survey on Drug Use & Health:  Detailed Tables

Incidence Tables - 4.1 to 4.16 (Standard Errors and P Values)

4.1D Past Year Initiation of Illicit Drug Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Illicit Drug Use, and Past Year Illicit Drug Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2004 and 2005

4.1P Past Year Initiation of Illicit Drug Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Illicit Drug Use, and Past Year Illicit Drug Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2005 Versus 2004

4.2D Past Year Initiation of Marijuana Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Marijuana Use, and Past Year Marijuana Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2004 and 2005

4.2P Past Year Initiation of Marijuana Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Marijuana Use, and Past Year Marijuana Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2005 Versus 2004

4.3D Past Year Initiation of Cigarette Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Cigarette Use, and Past Year Cigarette Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2004 and 2005

4.3P Past Year Initiation of Cigarette Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Cigarette Use, and Past Year Cigarette Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2005 Versus 2004

4.4D Past Year Initiation of Alcohol Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Alcohol Use, and Past Year Alcohol Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2004 and 2005

4.4P Past Year Initiation of Alcohol Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Alcohol Use, and Past Year Alcohol Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2005 Versus 2004

4.5D Past Year Initiation of Substance Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 or Older: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2004 and 2005

4.5P Past Year Initiation of Substance Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 or Older: P Values from Tests of Differences of Percentages, 2005 Versus 2004

4.6D Past Year Initiation of Substance Use among Persons Aged 12 to 17, Persons Aged 12 to 17 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 to 17: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2004 and 2005

4.6P Past Year Initiation of Substance Use among Persons Aged 12 to 17, Persons Aged 12 to 17 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 to 17: P Values from Tests of Differences of Percentages, 2005 Versus 2004

4.7D Past Year Initiation of Substance Use among Persons Aged 18 to 25, Persons Aged 18 to 25 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 18 to 25: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2004 and 2005

4.7P Past Year Initiation of Substance Use among Persons Aged 18 to 25, Persons Aged 18 to 25 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 18 to 25: P Values from Tests of Differences of Percentages, 2005 Versus 2004

4.8D Past Year Initiation of Substance Use among Persons Aged 26 or Older, Persons Aged 26 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 26 or Older: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2004 and 2005

4.8P Past Year Initiation of Substance Use among Persons Aged 26 or Older, Persons Aged 26 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 26 or Older: P Values from Tests of Differences of Percentages, 2005 Versus 2004

4.9C Past Year Initiation of Substance Use among Persons Aged 12 or Older, by Gender: Standard Errors of Numbers in Thousands, 2004 and 2005

4.10C Past Year Initiation of Substance Use among Persons Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: Standard Errors of Numbers in Thousands, 2004 and 2005

4.11C Past Year Initiation of Substance Use among Persons Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: Standard Errors of Numbers in Thousands, 2004 and 2005

4.12C Past Year Initiation of Substance Use among Persons Aged 12 to 49, by Gender: Standard Errors of Numbers in Thousands, 2004 and 2005

4.13D Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older, by Gender: 2004 and 2005

4.13P P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older, by Gender: 2005 Versus 2004

4.14D Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: 2004 and 2005

4.14P P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: 2005 Versus 2004

4.15D Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: 2004 and 2005

4.15P P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: 2005 Versus 2004

4.16D Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 to 49, by Gender: 2004 and 2005

4.16P P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 to 49, by Gender: 2005 Versus 2004

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This page was last updated on June 16, 2008.