Data files:

NSDUH2004.por.zip: Zip file containing NSDUH 2004 data, SPSS portable file format
NSDUH2004.xpt.zip: Zip file containing NSDUH 2004 data, SAS transport (XPORT) file format
NSDUH2004.dta.zip: Zip file containing NSDUH 2004 data, Stata system file format

Documentation files:

2004NSDUH_PUF_Codebook.zip contains the following files:

1_PUF2004_012706_Cover.doc: Coversheet
2_PUF2004toc_012706.doc: Table of Contents
3_2k4PUFIntro_01-26-06.doc: Introduction and Description
4_PUF2004cbk_012706.doc: Variables and Frequencies
A_CAI Drug Appendix 2004 .doc:	Appendix A: Drug Codes for Open-Ended Questions
B_DrugOthSpecify.doc: Appendix B: Consolidated Drug Other Specify Tables
C_CAI Tobacco Brand Appendix 2004.doc: Appendix C: Tobacco Brand Codes for Open-Ended Questions
D_SubDepAbuse_Appendix_2004.doc: Appendix D: Recoded Substance Dependence and Abuse Variable Documentation
E_RecodedAdultMentalHealth_2004_9_23_05.doc: Appendix E: Recoded Adult Mental Health: Serious Psychological Distress Variable Documentation
F_Depression_Appendix_2004_9_23_05.doc: Appendix F: Recoded Depression Variable Documentation
G_Occupation_Recodes_2004.doc: Appendix G: Occupational Classification System for Analytic Recodes
H_Industry_Recodes_2004.doc: Appendix H: Industrial Classification System for Analytic Recodes


The 2004 NSDUH questionnaire and showcards are available from OAS/SAMHSA at:

Questionnaire: http://www.oas.samhsa.gov/nhsda/2k4CAI/2k4CAISpecsW.pdf
Showcards: http://www.oas.samhsa.gov/NHSDA/2k4CAI/2k4ShowcardExternal.pdf