The Himmelfarb Library, though the Milkin School of Public Health and Health Services research guide, offers links to data and statistics.
Through the National Information Center on Health Services Research and Health Care Technology (NICHSR) offers an online course on finding and using health statistics.
Partners in Information Access for the Public Health Workforce
A collaboration of US Government Agencies, Public Health Organizations, and Health Sciences Libraries
Data and statistical resources from the Centers for Disease Control and Prevention (CDC)
http://www.cdc.gov/