Sökning: "Proportional Hazards"
Visar resultat 16 - 20 av 75 avhandlingar innehållade orden Proportional Hazards.
16. Identification of tissue biomarkers of prognostic significance in pancreatic cancer
Sammanfattning : Background: Pancreatic cancer is the third leading cause of cancer-related mortality. Lack of early detection strategies and therapeutic resistance are main contributors to the poor prognosis. Unfortunately, there are no tissue biomarkers available for the prognosis of pancreatic cancer in routine clinical use. LÄS MER
17. Should I stay or should I go – Factors associated with hospitalization risk among older persons in Sweden
Sammanfattning : An increasingly older population will most likely lead to greater demands on the health care system, as older age is associated with an increased risk of having acute and chronic conditions. The number of diseases or disabilities is not the only marker of the amount of health care utilized, as persons may seek hospitalization without a disease and/or illness that requires hospital healthcare. LÄS MER
18. Generalized survival models as a tool for medical research
Sammanfattning : In medical research, many studies with the time-to-event outcomes investigate the effect of an exposure (or treatment) on patients’ survival. For the analysis of time-to-event or survival data, model-based approaches have been commonly applied. LÄS MER
19. Epidemiological studies of the etiology of pancreatic cancer
Sammanfattning : Pancreatic cancer is one of the most lethal human cancers with less than 5% of patients surviving 5 years. Despite an urgent need for primary prevention, little is known about the etiology of this cancer. This thesis was aimed at increasing our understanding of the etiology of pancreatic cancer with regard to lifestyle and infectious agents. LÄS MER
20. Flexible parametric models for cancer patient survival : loss in expectation of life and further developments
Sammanfattning : Population-based cancer studies can contribute to a better understanding of cancer patient survival. The general aim of this thesis was to develop and apply statistical methods for population-based cancer studies to ensure understanding in this area. In any analysis setting, it is important that the statistical methods are appropriate. LÄS MER