epidemiologic study

epidemiologic study

A study that compares 2 groups of people who are alike except for one factor, such as exposure to a chemical or the presence of a health effect; the investigators try to determine if any factor is associated with the health effect
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In the other epidemiologic study, current use of pramipexole was associated with an increased risk of heart failure, compared with levodopa.
Wendy Marsh of the University of Massachusetts, Worcester, and her colleagues reviewed data from 1,282 women participating in the Study of Women's Health Across the Nation (SWAN), a multisite, long-term epidemiologic study ofwomen during midlife and through the menopausal transition.
Based on data in the Veterinary Medical Database (VMDB), 1,129 feline intestinal tumor patients between 1964 and 2004 were evaluated for inclusion in an epidemiologic study.
Another epidemiologic study, reported in the March 2005 issue of Neuro Toxicology, showed that women who were exposed to organophosphate pesticides in an agricultural community in California had children who displayed adverse neurodevelopmental effects, and that higher levels of pesticide metabolites in maternal urine were associated with abnormal reflexes in the women's newborn children.
The largest epidemiologic study ever conducted in North America of a childhood nervous system cancer known as neuroblastoma suggests women who take multivitamins during pregnancy can cut their children's risk of the tumor by 30-40%.
DENVER -- Migrainous headache--the diagnosis that describes patients who meet most but not all of the International Headache Society's strict diagnostic criteria for migraine--may afflict 3% of the population, based on the results of an epidemiologic study.
Another type of epidemiologic study involves examination of STD rates in populations rather than individuals.
A National Academy of Science review of the federal regulations found their scientific basis to be sound, and an epidemiologic study of families living on farms where sludge was used as fertilizer determined their health was not harmed, Walker said.
An epidemiologic study submitted to OSHA by the synthetic rubber industry in late 1995 demonstrated an excess risk of cancer among workers exposed to 1,3-butadiene.
But this epidemiologic study could not tease out the agent responsible -- chlorine, by-products of the disinfectant's reaction with water contaminants, or both (SN: 7/11/92, p.
Designing and Implementing a Molecular Epidemiologic Study
Epidemiologic study of Parkinson's disease in Hong Kong.