Cornell sociologist's statistical sampling method to be used by CDC to track HIV-risk behavior among drug users in 25 cities
FOR RELEASE: Nov. 19, 2004
Contact: Susan S. Lang
ITHACA, N.Y. -- What's the best way to get a statistically reliable sample of people who are hard to identify, such as illegal-drug users in large cities, itinerant jazz musicians, aging Manhattan artists and semi-professional storytellers?
Answer: Use a new "pyramid" sampling method developed by a Cornell University sociologist. The Centers for Disease Control and Prevention (CDC) will use the method to recruit injection drug users (IDUs) and measure their HIV-risk behavior in the 25 U.S. cities with the largest number of AIDS cases.