Sökning: "nested case-control"
Visar resultat 1 - 5 av 127 avhandlingar innehållade orden nested case-control.
1. Molecular epidemiology approach : nested case-control studies in glioma and lymphoid malignancies
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
2. Efficient design and analysis of extended case-control studies
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
3. Prospective studies of hormonal and life-style related factors and risk of cancer
Sammanfattning : Background: Androgens are important in prostate cancer development but how circulating levels of androgens affect risk of prostate cancer of different aggressiveness is not clear. Being childless has been associated with a lower risk of prostate cancer, but it is not clear if this association is causal or a result of residual confounding. LÄS MER
4. Diet and postmenopausal breast cancer - With a focus on low-grade inflammation
Sammanfattning : Diet-breast cancer studies have shown that “healthy eating patterns” are associated with decreased risk whereas unhealthy patterns (especially those including alcohol) are associated with increased risk, particularly in postmenopausal women. The potential mechanisms behind the observed associations are still under investigation. LÄS MER
5. Epidemiological Aspects of Asthma in Primary Care : Special Reference to Prevalence, Clinical Detection and Validation
Sammanfattning : Objectives. To describe the prevalence of asthma in a mid-Swedish region and measure the detection rate of asthma in primary care. To compare clinical outcomes for adolescents with asthma in primary care or in paediatric care and to perform a clinical validation in children with airway, nose and skin symptoms. Material and methods. LÄS MER