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NPSAS: Research Methodology Student Financing of Graduate and First-Professional Education, 1999-2000
The 1999-2000 National Postsecondary Student Aid Study
Accuracy of Estimates
Data Analysis System
Statistical Procedures
Differences Between Means
Linear Trends
Executive Summary
Full Report (PDF)
Executive Summary (PDF)
The 1999-2000 National Postsecondary Student Aid Study

The 1999–2000 National Postsecondary Student Aid Study (NPSAS:2000) is a comprehensive nationwide study conducted by the U.S. Department of Education’s National Center for Education Statistics (NCES) to determine how students and their families pay for postsecondary education.1 It also describes demographic and other characteristics of students enrolled. The study is based on a nationally representative sample of all students in postsecondary education institutions, including undergraduate, graduate, and first-professional students. For NPSAS:2000, information was obtained from more than 900 postsecondary institutions on approximately 50,000 undergraduate, 9,000 graduate, and 3,000 first-professional students. They represented 16.5 million undergraduates, 2.4 million graduate students, and 300,000 first-professional students who were enrolled at some time between July 1, 1999 and June 30, 2000 (the NPSAS year). Because they represent estimates of students enrolled at any time during the NPSAS year, these totals are larger than the fall 1999 enrollments reported in IPEDS. About 6 percent of the undergraduates were enrolled at more than one institution during the NPSAS year. For these students, tuition and student budgets at the second institution are not known, and they were excluded from the variables for tuition and total price of attendance, as well as the calculations of net price and need.

The response rate for obtaining institutional record data for all students was 97 percent and the weighted overall student interview response rate was 65.6 percent.2 Because the student telephone interview response rates for NPSAS:2000 were less than 70 percent in some institutional sectors, an analysis was conducted to determine if Computer Assisted Telephone Interview (CATI) estimates were significantly biased due to CATI nonresponse.3 Considerable information was known for CATI nonrespondents and these data were used to analyze and reduce the bias. The distributions of several variables using the design-based, adjusted weights for study respondents (study weights) were found to be biased before CATI nonresponse adjustments. The CATI nonresponse and poststratification procedures, however, reduced the bias for these variables; and the remaining relative bias ranged from 0 to 0.35 percent.

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