Search for dissertations about: "observational method"

Showing result 21 - 25 of 154 swedish dissertations containing the words observational method.

2. 21. Covariate selection and propensity score specification in causal inference

   Author : Ingeborg Waernbaum; Xavier de Luna; Elena Stanghellini; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Covariate selection; graphical models; matching; observational studies; treatment effects; unconfoundedness; Statistics; Statistik;

   Abstract : This thesis makes contributions to the statistical research field of causal inference in observational studies. The results obtained are directly applicable in many scientific fields where effects of treatments are investigated and yet controlled experiments are difficult or impossible to implement. READ MORE

4. 22. Ultrasound measurement of cervical length in the second trimester of pregnancy for prediction of preterm delivery

   Author : Pihla Kuusela; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; preterm delivery; transvaginal ultrasound; cervical length measurement; second trimester; prospective study; observational study; mass screening; reproducibility of results; inter-observer variation; intra-observer variation; data accuracy; quality control;

   Abstract : Abstract Background: Short cervical length is a risk factor for preterm delivery (PTD) and screening of cervical length using transvaginal ultrasound in the second trimester is a proposed method to find women at risk Aims: To examine the potential value of routine measurement of cervical length in a Swedish population of women with singleton pregnancies in the prediction of PTD. To estimate inter- and intra-observer agreement and reliability of cervical length measurements. READ MORE

5. 23. How to create and analyze a Heart Failure Registry with emphasis on Anemia and Quality of Life

   Author : Åsa Jonsson; Ulf Dahlström; Magnus Edner; Lars Lund; Bertil lindahl; Linköpings universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Heart failure; reduced ejection fraction; mid-­‐range ejection fraction; preserved ejection fraction; anemia; Health-­‐related quality of life; observational study; outcomes;

   Abstract : Background and aimsHeart failure (HF) is a major cause of serious morbidity and death in the population and one of the leading medical causes of hospitalization among people older than 60 years. The aim of this thesis was to describe how to create and how to analyze a Heart Failure Registry with emphasis on Anemia and Quality of Life. READ MORE

6. 24. Epidemiological aspects of cardiovascular morbidity and mortality among individuals with diabetes: the relative importance of cardiovascular risk factors

   Author : Aidin Rawshani; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Diabetes mellitus; Cardiovascular medicine; Epidemiology; Observational studies; Heart failure; Cardiovascular disease; Mortality; Type 1 diabetes mellitus; Type 2 diabetes mellitus; Machine learning;

   Abstract : Background: Long-term trends of cardiovascular complications and death among patients with diabetes have not been studied extensively. In addition, we aimed to examine the effect of multifactorial risk factor control, as well as optimal levels- and relative importance of cardiovascular risk factors, in patients with type 1 diabetes and type 2 diabetes. READ MORE

7. 25. Upper airway surgery in obstructive sleep apnoea : descriptive, observational and randomised controlled studies

   Author : Nanna Browaldh; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Obstructive sleep apnoea syndrome (OSAS) is a general health problem which causes daytime sleepiness, impaired quality of life and increased morbidity and mortality. A narrow upper airway anatomy is a common cause of OSAS, and tracheostomy was the initial surgical treatment for OSAS. READ MORE