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Visar resultat 1 - 5 av 128 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Molecular epidemiology approach : nested case-control studies in glioma and lymphoid malignancies

   Författare :Florentin Späth; Beatrice S. Melin; Carl Wibom; Ann Sofie Johansson; Ingvar Bergdahl; Ola Landgren; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Glioma; B cell lymphoma; multiple myeloma; risk; repeated samples; prospective longitudinal study; nested case-control study; circulating sEGFR and sERBB2; circulating immune markers and growth factors; marker disease association; disease progression; NSHDS; Janus; linear mixed modeling; epidemiologi; Epidemiology; Oncology; onkologi;

   Sammanfattning : BACKGROUND: Nested case-control studies aim to link molecular markers with a certain outcome. Repeated prediagnostic samples may improve the evaluation of marker-disease associations. However, data regarding the benefit of repeated samples in such studies are sparse. LÄS MER

3. 2. Efficient design and analysis of extended case-control studies

   Författare :Bénédicte Delcoigne; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : The nested case-control design is widely used in epidemiology for its efficiency, as it combines the advantages of both cohort and case-control designs. This design is an extension of the matched case-control design, where the matching variable is the time of occurrence of the outcome. LÄS MER

4. 3. Child health and acute respiratory infections in Ethiopia : epidemiology for prevention and control

   Författare :Lulu Muhe; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Epidemiology; acute respiratory infections; morbidity; mortality; infants; under-five children; determinants; intervention;

   Sammanfattning : This thesis is based on studies in Butajira district in the south central part of Ethiopia and one study in the Ethio-Swedish Children's Hospital in Addis Ababa. The Butajira project has a continuous demographic surveillance system, established in 1987 in a sample of 10 communities with a total baseline population of about 30,000. LÄS MER

5. 4. Phytoestrogens and prostate cancer : experimental, clinical, and epidemiological studies

   Författare :Annika Bylund; Pär Stattiin; Anders Bergh; Göran Hallmans; Swen-Olof Andersson; Umeå universitet; []
   Nyckelord :prostatic neoplasm; phytoestrogens; lignans; enterolactone; rye; 7-hydroxymataireorcinol; nude mice; TRAMP mice; nested case control study; LNCaP; Oncology; onkologi;

   Sammanfattning : Dietary factors may affect development and progression of prostate cancer. Experimental and epidemiological studies have suggested an effect of phytoestrogens on prostate cancer. Lignans are the predominant phytoestrogen in a Western diet. LÄS MER

7. 5. Environmental risk factors for the occurrence of multiple sclerosis

   Författare :Martin Biström; Peter Sundström; Johan Hultdin; Jonatan Salzer; Kjell-Morten Myhr; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Multiple sclerosis; risk factors; epidemiology; case-control study; Human herpesvirus 6A; Human herpesvirus 6B; leptin; insulin; Epstein-Barr virus; vitamin D; Neurology; neurologi;

   Sammanfattning : Background. Multiple sclerosis (MS) is an inflammatory and degenerative disease of the central nervous system that typically debuts around age 30. About 2.3 million people are affected in the world today, and besides trauma it is the most common cause of neurological disability among young adults in the western world. LÄS MER