Sökning: "Non-response"
Visar resultat 6 - 10 av 31 avhandlingar innehållade ordet Non-response.
6. A quarter century perspective on low back pain : a longitudinal study
Sammanfattning : The focus of this thesis is analyses of associations between occupational and non-occupational conditions on the one hand, and low back pain on the other. Methodological aspects of assessment of information about psychosocial working conditions, as well as of consequences of attrition in longitudinal studies, have also been examined. LÄS MER
7. Revisional bariatric surgery : more than a moral obligation
Sammanfattning : Growing awareness of biological, genetic, environmental, and behavioural factors contributed to the recognition of obesity as a chronic disease. Nowadays, obesity and its medical/surgical treatment is widely acknowledgedin the medical curriculum. LÄS MER
8. Complications following anterior cruciate ligament reconstruction
Sammanfattning : Background: Venous thromboembolism (VTE) and septic arthritis (SA) are two rare complications following anterior cruciate ligament reconstruction (ACLR). Due to their rare incidence, risk factors and outcome are difficult to analyse and the aims of this thesis are to improve knowledge in this area. Methods: All studies are register based. LÄS MER
9. Studies on Hepatitis B Vaccination and Factors Associated with the Vaccine Response
Sammanfattning : Hepatitis B virus causes liver disease and up to 2 billion people have been in contact with the virus world wide. It can cause both acute and chronic disease. The routes for transmission are through blood, mother to infant at time of delivery and sexually. LÄS MER
10. Bayesian Cluster Analysis : Some Extensions to Non-standard Situations
Sammanfattning : The Bayesian approach to cluster analysis is presented. We assume that all data stem from a finite mixture model, where each component corresponds to one cluster and is given by a multivariate normal distribution with unknown mean and variance. LÄS MER