Viremia preceding multiple sclerosis: Two nested case-control studies
نویسندگان
چکیده
منابع مشابه
Multiple sclerosis preceding CNS lymphoma: a case report.
Multiple sclerosis (MS) is an autoimmune disease that targets the myelin of the brain, spinal cord, and optic nerves. The inciting trigger that activates this immune response is unknown. Primary central nervous system (CNS) lymphoma is usually a diffuse large B-cell non-Hodgkin's lymphoma that originates in the brain, spinal cord, leptomeninges, or eyes. We report a 33-year-old patient who was ...
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A stratified version of nested case-control sampling which we call "countermatching" is presented. This design uses data available for all cohort members to obtain a sample for collecting additional information in a case-control substudy. Hitherto the only stratified sampling design for such studies has involved matching of controls to cases with respect to confounding variables. However, in so...
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A frequently used study design within epidemiology is large cohort studies. In some situations additional information which is not included in the cohort, for instance biological material stored in biobanks, is required. The availability of such material is usually limited and might be very expensive to analyze for the entire cohort. A reasonable strategy is therefore to restrict the study samp...
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ژورنال
عنوان ژورنال: Virology
سال: 2018
ISSN: 0042-6822
DOI: 10.1016/j.virol.2018.04.006