Sökning: "ascertainment"

Visar resultat 1 - 5 av 25 avhandlingar innehållade ordet ascertainment.

  1. 1. The Diabetes Incidence Study in Sweden (DISS): Ascertainment, risk factors, and problems with classification

    Detta är en avhandling från Bengt Littorin, Södervärns Vårdcentral, Ahlmansgatan 12, S-214 27 Malmö, Sweden

    Författare :Bengt Littorin; Lunds universitet.; Lund University.; [2001]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; type 1; stress; register; life events; incidence; ICA; family characteristics; GADA; epidemiology; diabetes mellitus; classification; Ascertainment; BMI; type 2; unclassifiable; year of diagnosis.; Endocrinology; secreting systems; diabetology; Endokrinologi; sekretion; diabetologi;

    Sammanfattning : Popular Abstract in Swedish Patienter med diabetes mellitus har högt blodsocker. Insulin reglerar blodsockervärdena. Redan i slutet av 1800 talet föreslogs att skulle det finnas två olika typer av diabetes, den ena beroende på bristande insulinbildning, den andra beroende på bristande insulineffekt. LÄS MER

  2. 2. Design and analysis of response selective samples in observational studies

    Detta är en avhandling från Stockholm : Department of Mathematics, Stockholm University

    Författare :Maria Grünewald; Stockholms universitet.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ascertainment; missing data; outcome dependent sampling; response selective samples; sequential design; stochastic EM algorithm; MATHEMATICS Applied mathematics Mathematical statistics; MATEMATIK Tillämpad matematik Matematisk statistik; matematisk statistik; Mathematical Statistics;

    Sammanfattning : Outcome dependent sampling may increase efficiency in observational studies. It is however not always obvious how to sample efficiently, and how to analyze the resulting data without introducing bias. LÄS MER

  3. 3. Fetal Anomalies Surveillance and Diagnostic Accuracy of Ultrasound and Magnetic Resonance Imaging

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Hashem Amini; Uppsala universitet.; [2010]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pregnancy termination; fetal anomalies; antenatal diagnosis; ultrasound; second trimester; fetal MRI; CNS anomalies; pregnancy management; non-CNS anomalies; fetal autopsy; birth defects registry; ascertainment; spina bifida; cleft lip palate; MEDICINE Surgery Obstetrics and women s diseases; MEDICIN Kirurgi Obstetrik och kvinnosjukdomar; MEDICINE Surgery Obstetrics and women s diseases Obstetrics and gynaecology; MEDICIN Kirurgi Obstetrik och kvinnosjukdomar Obstetrik och gynekologi; Obstetrik och gynekologi; Obstetrics and Gynaecology;

    Sammanfattning : The aims were to investigate the accuracy of ultrasound in diagnosis of structural fetal anomalies with special focus on false positive findings (I), to evaluate the additional value of second trimester fetal MRI on pregnancy management (II-III) and to estimate the ascertainment in the Swedish Birth Defects Registry and incidence of spina bifida and cleft lip/palate (IV).Retrospectively, 328 fetal autopsies were identified where pregnancies were terminated due to ultrasonographically diagnosed fetal anomalies. LÄS MER

  4. 4. El Pretérito Perfecto Compuesto del español de Chile, Paraguay y Uruguay Aspectos semánticos y discursivos

    Detta är en avhandling från Stockholm : Department of Spanish, Portuguese and Latin American Studies, Stockholm University

    Författare :Carlos Henderson; Stockholms universitet.; [2010]
    Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; HUMANITIES and RELIGION Languages and linguistics Romance languages Spanish language; HUMANIORA och RELIGIONSVETENSKAP Språkvetenskap Romanska språk Spanska språket; Spanish; spanska; Spanish Present Perfect; basic meaning; type and token reference; temporal indeterminacy; detemporalized ascertainment; aspectual complicity.;

    Sammanfattning : The aim of the present work is to describe the semantics and the discursive functions from a general cognitivist point of view of the usage of the Present Perfect in the spoken Spanish of Chile, Paraguay and Uruguay. It is argued that cross-linguistic values often ascribed to perfect, such as continuity, current relevance and recency to the speech time –ST– do not offer a consistent view of the actual usage. LÄS MER

  5. 5. Statistical genetic analysis of family data

    Detta är en avhandling från Stockholm : Karolinska Institutet, Department of Medical Epidemiology and Biostatistics

    Författare :Benjamin H Yip; Karolinska Institutet.; Karolinska Institutet.; [2008]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Variance component; ascertainment; population-based family data; Generalized linear mixed model; binary trait; quantitative genetics;

    Sammanfattning : The importance of genetic determinants and risk factors of diseases has been consistently recognized in genetic epidemiology, which is one of the fastest growing areas in genomic medicine. Familial clustering is a common characteristic of genetic related phenotypes, providing vital insights into the etiology of diseases by establishing the relative contribution of genetic and environmental factors. LÄS MER