• Waves 1 through 5.5 and ATS
• Adult (18+ years old), youth (12-17 years old), and Youth Merged datasets (which combines information from the adult individuals who entered the study as a youth but aged up to adults in the following waves, with youth datasets).
• Variables derived by DAD to assess:
  • Tobacco product use status (non-user, non-current, or current user) based on past 30-days use and established/regular use
  • Initiation, duration of use, and cessation
  • Intensity of use and tobacco dependence
  • Poly-tobacco use
  • Flavored tobacco use
  • Health outcomes
  • Impact of COVID-19 (Waves 5.5 and ATS)

We have also generated dictionaries for each wave to review detailed information on the DAD-derived variables:

• Adult datasets:
  • Derived Variables by DAD Core: Cigarettes and ENDS (Wave 1) (pdf)
  • Derived Variables by DAD Core: All Tobacco Products (Wave 1) (pdf)
  • Derived Variables by DAD Core: Cigarettes and ENDS (Wave 2) (pdf)
  • Derived Variables by DAD Core: All Tobacco Products (Wave 2) (pdf)
  • Derived Variables by DAD Core: Cigarettes and ENDS (Wave 3) (pdf)
  • Derived Variables by DAD Core: All Tobacco Products (Wave 3) (pdf)
  • Derived Variables by DAD Core: Cigarettes and ENDS (Wave 4) (pdf)
  • Derived Variables by DAD Core: All Tobacco Products (Wave 4) (pdf)
• Youth datasets:
  • Derived Variables by DAD Core: Cigarettes and ENDS (Wave 1) (pdf)
  • Derived Variables by DAD Core: All Tobacco Products (Wave 1) (pdf)
  • Derived Variables by DAD Core: Cigarettes and ENDS (Wave 2) (pdf)
  • Derived Variables by DAD Core: All Tobacco Products (Wave 2) (pdf)
  • Derived Variables by DAD Core: Cigarettes and ENDS (Wave 3) (pdf)
  • Derived Variables by DAD Core: All Tobacco Products (Wave 3) (pdf)
  • Derived Variables by DAD Core: Cigarettes and ENDS (Wave 4) (pdf)
  • Derived Variables by DAD Core: All Tobacco Products (Wave 4) (pdf)

• Data from 1991 through 2020
• Youth from 8th, 10th, and 12th grades.
• Variables derived by DAD to assess:
  • Use of cigarettes, ENDS, and smokeless tobacco in the last 30 days.
  • Flavored tobacco use

• Data from 2002 to 2020
• Ages 12+ years old
• Variables derived by DAD Core:
  • Established cigarette smoking status (current, former, or never user)
  • Menthol cigarette smoking status, categorized as non-current smoker, menthol smoker, non-menthol smoker

• Data from 1999 through 2021
• Ages (9-19+ years old)
• Variables derived by DAD Core:
  • Established cigarette smoker status (current, non-current, or never smoker)
  • Established e-cigarette user status (current, non-current, or never user).
  • Dual use status of cigarettes and e-cigarettes categorized as never user, non-current user, exclusive cigarette smoker, exclusive e-cig user, current dual user.

• Data from 1992 through 2019
• Adult (18+ years old)
• Variables derived by DAD Core:
  Cigarette use status (non-user, non-current, or current user) based on established use
  • Initiation, duration of use, and cessation
  • Menthol cigarette-use indicator available for 2003 and after
  • Other tobacco product use status (non-user, non-current, or current user) available for 1995 and after
  • Initiation, duration of use, cessation, and flavored use available from 2010 and after for other tobacco products

• Data from 1980 through 2021
• Adult (18+ years old)
• Variables derived by DAD:
  • Menthol cigarette smoking status, categorized as non-current smoker, menthol smoker, or non-menthol smoker (available for 1980, 2005, 2010, and 2015)
  • Years since quit, categorized as: 1-5, 6-10, 11-14, 15-19, 20-24, 25-29, 30+ (available for 1994, 1995, 1997 to 2018, and 2020)
  • Established cigarette smoking status (current, former, or never user)