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American Journal of Epidemiology Advance Access published online on October 13, 2006
American Journal of Epidemiology, doi:10.1093/aje/kwj351
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American Journal of Epidemiology Copyright © 2006 by the Johns Hopkins Bloomberg School of Public Health All rights reserved; printed in U.S.A.
Received August 30, 2005
Accepted May 24, 2006

PRACTICE OF EPIDEMIOLOGY

An Internet-based Method of Selecting Control Populations for Epidemiologic Studies

Mary Bishop Stone 1 *, Joseph L. Lyon 1, Sara Ellis Simonsen 1, George L. White Jr. 1, and Stephen C. Alder 1

1 From the Public Health Program, Department of Family and Preventive Medicine, University of Utah, Salt Lake City, UT

* To whom correspondence should be addressed.
Mary Bishop Stone, E-mail: marybishop.stone{at}utah.edu


  Abstract

Identifying control subjects for epidemiologic studies continues to increase in difficulty because of changes in telephone technology such as answering services and machines, caller identification, and cell phones. An Internet-based method for obtaining study subjects that may increase response rates has been developed and is described. This method uses information from two websites that, when combined, provide accurate and complete lists of names, addresses, and listed phone numbers. This method was developed by use of randomly selected streets in a suburb of Salt Lake City, Utah, in June 2005.

Keywords: control groups; epidemiologic methods; patient participation; patient selection; research design.
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