@article{ref1,
title="Assigning time-linked exposure status to controls in unmatched case-control studies: alcohol use and nearly lethal suicide attempts",
journal="Statistics in Medicine",
year="2001",
author="Frankowski, R. and Ikeda, R. M. and Simon, T. A. and Potter, Lloyd B. and Mercy, James A. and Webb, K. B. and Powell, Kenneth E. and Kresnow, M.",
volume="20",
number="9-10",
pages="1479-1485",
abstract="In case-control studies, determination of alcohol consumption by cases immediately prior to the injury event is often conceptually straightforward. However, determination of consumption status by controls is difficult because they lack a reference point, especially when cases and controls are not individually matched. We describe a method of assigning alcohol consumption status to controls using a 24-hour drinking history, the distribution in time of case events, and the random assignment of a specific time period to each control subject. This methodology offers a practical approach for determining alcohol consumption status among control subjects immediately prior to a case event, when controls lack a reference point and have not been individually matched to cases.  <p>Language: en</p>",
language="en",
issn="0277-6715",
doi="10.1002/sim.684",
url="http://dx.doi.org/10.1002/sim.684"
}