Analyze & Subset--Study No. 4283
Title: National Center for Early Development and Learning Multistate Study of Pre-Kindergarten, 2001-2003
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.
(1) All analysis should include the state variable when weights are used. The samples were drawn separately for each state and the weights add to 100 percent within each state, not across each state. (2) For children within a classroom, because boys and girls were sampled and the dispersions were sometimes low, they were considered sampled without replacement, by gender. (3) The child weights were adjusted for nonresponse using a model-based approach. Children were divided based upon important demographic characteristics and then proportionally reweighted within each cell that contained attrition. (4) The weights should be used any time that a cross-sectional analysis within a period is performed. For example, the effect on children's test scores in the spring of pre-k based upon classroom and teacher characteristics should use the spring of pre-k child weights.
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.
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