Sökning: "ascertainment"

Visar resultat 6 - 10 av 30 avhandlingar innehållade ordet ascertainment.

1. 6. Methodological aspects on excess cancer riskafter exposure to ionizing radiation

   Författare :Erik Holmberg; Göteborgs universitet; []
   Nyckelord :ionizing radiation; skin haemangioma; breast cancer; parathyroid adenoma; excess cancer risk; bias; confounding; risk models; pooled analysis.;

   Sammanfattning : Aims. The aims of this study were to establish a cohort of persons treated with radiotherapy for skin haemangioma in childhood and study the excess risk of cancer after exposure to ionizing radiation. LÄS MER

3. 7. On Causal Attribution

   Författare :B. Ingemar B. Lindahl; Dugald Murdoch; Ingmar Pörn; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; causation; cause-condition distinction; causal selection; differentiating factor; inus condition; explanation; covering-law model; Mill’s methods; objectivity; pragmatics; responsibility; abnormalism; history; science; Theoretical philosophy; Teoretisk filosofi; Theoretical Philosophy; teoretisk filosofi;

   Sammanfattning : This dissertation treats of the problem of attributing the occurrence of an individual event or state to a single cause — a problem commonly understood either as a question of distinguishing the cause from the mere conditions or as a matter of singling out, from several causes, one cause, as the cause. The main purpose of the study is to clarify some basic concepts, and some criteria of ascertainment of the cause, that may be discerned in the literature on causal attribution. LÄS MER

4. 8. Current changes in the occurrence of autism spectrum disorders in Stockholm

   Författare :Selma Idring Nordström; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : The overall objective of this thesis is to estimate recent changes in and current prevalence of autism spectrum disorders (ASD) among young people in Stockholm County. An additional objective is to explore potential risk factors for ASD in view of the increasing occurrence in the population. LÄS MER

5. 9. Bioinformatic Analysis of Mutation and Selection in the Vertebrate Non-coding Genome

   Författare :Mikael Brandström; Hans Ellegren; Diethard Tautz; Uppsala universitet; []
   Nyckelord :Biology; non-coding genome; selection; mutation; chicken; human; indel; microsatellite; sequence alignment; comparative genomics; bioinformatics; vertebrate; Biologi;

   Sammanfattning : The majority of the vertebrate genome sequence is not coding for proteins. In recent years, the evolution of this noncoding fraction of the genome has gained interest. These studies have been greatly facilitated by the availability of full genome sequences. LÄS MER

7. 10. Stroke severity and outcome : in search of predictors using a population-based strategy

   Författare :Peter Appelros; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Stroke; incidence; epidemiology; risk factors; prognosis; outcome;

   Sammanfattning : This thesis, based on studies conducted in Örebro, the main municipality of Örebro County in Sweden, sought: 1) to determine the incidence rate and case fatality of first-ever stroke in a well-defined population; 2) to show the effects of selection bias on the frequency of different stroke characteristics; 3) to establish the incidence of neglect and anosognosia and their impact on disability; 4) to show the impact of pre-stroke risk factors on stroke severity and case fatality; and 5) to show the influence of stroke severity and other risk factor on one year mortality, on dependency after one year and on the risk of recurrent stroke. All first-ever cases of stroke were registered during a 12-month period 1999-2000. LÄS MER