ICPSR is the world's largest archive of computer-readable social science data. In addition to archiving collections from disciplines such as sociology, political science, history, and economics, ICPSR has seven special emphases in gerontology, substance abuse and mental health, criminal justice, child care, health and medical care, education, and demography. Also see our research guide on ICPSR.
The National Center for Health Statistics (NCHS) provides statistical information to guide actions and policies in order to improve the health of the American people. As the Nation's principal health statistics agency, NCHS leads the way with accurate, relevant, and timely data.