Search for dissertations about: "trend study"

Showing result 1 - 5 of 891 swedish dissertations containing the words trend study.

  2. 1. Complicated gallstone disease in Sweden 1988-2006 : a register study

    Author : Birger Sandzén; Mikael Öman; Erik Nilsson; Roland Andersson; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Gallstone disease; acute pancreatitis; acute biliary pancreatitis; common bile duct stones; acute cholecystitits; acute gallbladder disease; cholecystectomy; ERCP; endoscopic papillotomy; choledochotomy; Surgery; Kirurgi; kirurgi; Surgery;

    Abstract : Background The gallstone prevalence in the western world is 10-20%. Most gallstones are silent, but symptoms and complications appear in 20-40%. The incidence of symptom development in patients with silent gallstones is 2-4% per year. READ MORE

  4. 2. Symptoms, prehospital delay and long-term survival in men vs. women with myocardial infarction : a combined register and qualitative study

    Author : Rose-Marie Isaksson; Mats Eliasson; Christine Brulin; Karin Zingmark; Bengt Fridlund; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; myocardial infarction; symptoms; prehospital delay; men and women; long-term survival; time trend; experiences; Nursing; Omvårdnad; omvårdnadsforskning med medicinsk inriktning; Caring Sciences;

    Abstract : The general aim of this thesis was to study symptoms, prehospital delay and time trends in long-term survival in men and women with myocardial infarction (MI). The study was based on quantitative and qualitative data collections. READ MORE

  5. 3. Epidemiology of asthma in primary school children

    Author : Anders Bjerg Bäcklund; Eva Rönmark; Bo Lundbäck; Thomas Sandström; Giovanni Viegi; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Asthma; wheeze; child; allergic sensitisation; prevalence; remission; risk factor; trend; Lung diseases; Lungsjukdomar;

    Abstract : Background: Childhood asthma has increased worldwide, although recent studies report a prevalence plateau in some western countries.Aims: To investigate the prevalence of asthma and the associated risk factor patterns from ages 7-8 to 11-12 with special emphasis on the hereditary component, and further to study prevalence trends at age 7-8 from 1996 to 2006 and the possible determinants of these trends. READ MORE

  6. 4. Defects and Impurities in CdTe : An ab Initio Study

    Author : Anna Lindström; Mattias Klintenerg; Susanne Mirbt; Biplab Sanyal; Peter Zahn; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Native defects; Compensation mechanisms; Semiconductor doping; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Abstract : In this thesis defects and impurities in CdTe have been studied with ab initio methods. CdTe is a II-VI semiconductor with many important applications such as γ- and X-ray detectors, solar cells and medical imaging. READ MORE

  7. 5. Changes of evapotranspiration and water cycle in China during the past decades

    Author : Ge Gao; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Potential evapotranspiration; Actual evapotranspiration; Spatial and temporal characteristic; Trend; Controlling factors; Water cycle; Thornthwaite water balance; China;

    Abstract : Evapotranspiration is the second largest quantity in the water cycle and an important indicator for climate changes. Accurate estimations and better understanding of evapotranspiration are required in hydrologic studies and water resources modelling under stationary and changing climate conditions. READ MORE