case control


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case control

A form of research in which patients with a disease are compared with closely matched individuals who do not have the disease. It is used to uncover risk factors or exposures that may produce illness.
References in periodicals archive ?
It's well established that in medical case control studies, patients tend to disclose their histories more fully than healthy control groups (a phenomenon called recall bias), and a recent study has confirmed abortion underreporting by healthy women.
The investigators conducted a nested case control study of more than 29,000 Finnish men who participated in the AlphaTocopherol, Beta-Carotene Cancer Prevention Study.
Combining this tool with classical epidemiological case control design, researchers say they can now determine exactly where the epidemic is going -- whether rates are going up or down, precisely who is getting infected, how they're getting infected, and where the hot spots are.
Distributed case controls provide another level of refinement in case control," Woodside says.
In the absence of definitive trials, technology assessment methodologies have been forced to rely on various types of observational studies--prospective cohort, case control, retrospective studies, cross-sectional and case studies--and a certain component of expert opinion/group judgment, as expressed either in the published medical literature or by the assessors themselves.
Coordinated case control got managers and agents talking to each other and coordinating their workload, and pre-audit planning conferences got the agents, managers, and taxpayers all talking and communicating with each other.
The company provides high quality genotyping services for large projects, such as the 15,000 sample study with the Wellcome Trust Case Control Consortium.
Exposure Assessment Methodology Development in Support of a Pilot Study of the Long-Term Neuropsychological Impact of Methemoglobinemia and High Nitrate Exposure in Infants of Transylvania, Romania, with an added Case Control Study of MGH Risk Factors.
Participating organizations include GlaxoSmithKline, the National Genome Research Network (NGFN) in Germany, Erasmus MC in the Netherlands, the Karolinska Institute in Sweden, the Centre National de Genotypage in France and the Wellcome Trust Case Control Consortium (WTCCC) in the UK.
Bausch & Lomb (NYSE:BOL) said that the MMWR report issued today by the United States Centers for Disease Control and Prevention (CDC) on its case control study of Fusarium keratitis infections among contact lens wearers affirms the company's decision to recall its MoistureLoc solution and should give consumers and eye care professionals confidence in ReNu MultiPlus(R) and ReNu MultiPurpose lens care products.
Bausch & Lomb is collaborating with health authorities in Singapore and Hong Kong in completing a case control study to assess what common factors existed among the patients with infections.