Sökning: "case-cohort"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet case-cohort.

  1. 1. Correlated random effects models for clustered survival data

    Författare :Frank Eriksson; Chalmers tekniska högskola; Göteborgs universitet; Gothenburg University; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; competing risks; case-cohort; semiparametric; Survival analysis; random effects; routine register; frailty model; Survival analysis; frailty model; competing risks; random effects; case-cohort; routine register; semiparametric;

    Sammanfattning : Frailty models are frequently used to analyse clustered survival data in medical contexts. The frailties, or random effects, are used to model the association between individual survival times within clusters. LÄS MER

  2. 2. Semiparametric survival models for routine register data

    Författare :Frank Eriksson; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Survival; transformation; clustered; likelihood; random effects; case-cohort; routine register; semiparametric; clustered;

    Sammanfattning : Routine registers offer researchers opportunities to carry out studies of covariate effects on lifetimes of rare diseases otherwise infeasible because of the large cohorts required. Familial relationships necessary for analysis of environmental or genetic factors can be identified by record linking. LÄS MER

  3. 3. Phytosterols. Effect of intake on cholesterol absorption and colorectal cancer risk

    Författare :Lena Normén; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :phytosterols; phytostanols; soy sterols; sitostanol; ester; gas-liquid chromatography; GLC; cholesterol absorption; sterol excretion; fruit; vegetables; cereals; colon cancer; rectal cancer; dietary fiber;

    Sammanfattning : Phytosterols are lipid components of all food items of plant origin. They are effective in decreasing plasma cholesterol concentrations, but have also been suggested to protect against colorectal cancer. LÄS MER

  4. 4. Population-based studies of atrial fibrillation and ischemic stroke

    Författare :John Berntsson; Kardiovaskulär forskning - epidemiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Atrial fibrillation; Ischemic stroke; Biomarker; Stroke; Natriuretic peptides; Vascular endothelial growth factor; Epidemiology; Atrial Fibrillation; Stroke; Ischemic stroke; Natriuretic peptides; Vascular endothelial growth factor; Epidemiology;

    Sammanfattning : AbstractBackground: Atrial fibrillation (AF) is a major risk factor for ischemic stroke and the most common cause of cardioembolic stroke. Early detection of AF and AF subjects at high risk for stroke is therefore important. LÄS MER

  5. 5. Diet and the risk of latent autoimmune diabetes in adults (LADA) : studies on the association with fish and sweetened beverages

    Författare :Josefin Edwall Löfvenborg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP;

    Sammanfattning : Diabetes is an increasing public health problem affecting a breathtaking number of people worldwide. The knowledge about modifiable lifestyle factors influencing diabetes risk is extensive for type 2 diabetes, but limited for autoimmune forms of diabetes such as type 1 diabetes. LÄS MER