In this context, the epidemiologic study
by Suzanne N.
It describes basic concepts in epidemiology and statistics, including causality, sample size, power, probability sampling, measures of frequency and association, and disease surveillance and screening; epidemiologic study
designs (descriptive, analytic, and experimental); statistical techniques and epidemiologic applications, such as statistical models, general linear models, and categorical data and analysis; and special topics like nonparametric methods, life tables, and survival analysis.
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
. Cases were analyzed by breed, age, year of diagnosis, tumor type and tumor location.
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.
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.23).
In the other epidemiologic study
, current use of pramipexole was associated with an increased risk of heart failure, compared with levodopa.
of Parkinson's disease in Hong Kong.