A Directory of Prevention Domains, Constructs, and Items Used from the 1999 NHSDA Questionnaire
B Discussion of Missing Values for School Domain Factors
C Distribution of Risk and Protective Factors and Substance Use, by Age and Gender
D Methodological Changes Between the 1997 and 1999 NHSDAs
E Comparison of Similar But Not Identical Items Included in the 1997 and 1999 NHSDAs
This page was last updated on July 17, 2008.