The estimates presented in this report were produced using the NPSAS:2000 Data Analysis System (DAS). The DAS software makes it possible for users to specify and generate their own tables from the NPSAS:2000 data. With the DAS, users can replicate or expand upon the tables presented in this report. In addition to the table estimates, the DAS calculates proper standard errors⁵ and weighted sample sizes for these estimates. If the number of valid cases is too small to produce a reliable estimate (fewer than 30 cases), the DAS prints the message “low-N” instead of the estimate.

The DAS can be accessed electronically at /das. For more information about the NPSAS and BPS Data Analysis System, contact:

Aurora D'Amico
Postsecondary Studies Division
National Center for Education Statistics
1990 K Street, NW
Washington, DC 20006-5652
(202) 502-7334
aurora.d'amico@ed.gov