Analyze & Subset--Study No. 6693
Title: National Comorbidity Survey: Baseline (NCS-1), 1990-1992
Online Analysis Using SDA
The online analysis system allows you to run both simple and complex analyses, recode and compute new variables, and subset variables or cases for downloading. The software powering the system, named Survey Documentation and Analysis (SDA), was developed by the Computer-assisted Survey Methods Program (CSM) at the University of California, Berkeley.
Click on the link(s) below to begin using SDA.
Weight
Please note that weights may affect analysis results.
Depending on the section(s) of the NCS-1 survey from which the variable(s) originated, one of four sampling weights must be selected and applied. The Part I and Part II weights (p1fwt and p2wtv3, respectively) are a combination of the various weights described in NCS-1 papers to adjust for differential household size and differential nonresponse and post-stratification. The Tobacco Use Supplement weight (tobacwt) is a rescaling of the Part I weight for analysis of tobacco supplement variables only. The Part II Tobacco Use Supplement weight (p2tobwt) is a rescaling of the Part II weight for analysis of combinations of Part II and Tobacco Supplement variables. Please refer to the ICPSR Processor Notes in the codebook for details on determining the appropriate weight to use when analyzing a specific variable or combination of variables.
If you're having trouble with SDA utilities, you may wish to consult the online help files for SDA users provided by the Computer-assisted Survey Methods Program (CSM) at the University of California, Berkeley.
