Sökning: "Male twins"

Visar resultat 1 - 5 av 30 avhandlingar innehållade orden Male twins.

  1. 1. Epidemiology and genetics in ulcerative colitis with special reference to twins and smoking

    Författare :Curt Tysk; Linköpings universitet; []
    Nyckelord :ulcerative colitis; ulcerative proctitis; epidemiology; incidence; prevalence; genetics; twins; colonic glycoproteins; smoking; primary sclerosing cholangitis; MEDICINE; MEDICIN;

    Sammanfattning : In an epidemiologic study of ulcerative proctocolitis during the period 1963-1987, annual incidence rates increased fourfold and was during the last 10 years 13.1/105 inhabitants. The prevalence on December 31, 1987 was 234/105 inhabitants. Both rates are high but close to recent reports. LÄS MER

  3. 2. Crohn's disease : Studies on epidemiology, twins, aetiological factors and clinical course with special reference to smoking

    Författare :Eva Lindberg; Linköpings universitet; []
    Nyckelord :Crohn s disease; epidemiology; incidence; prevalence; smoking; genetics; twins; dietary antigens; yeast; Saccharomyces cerevisiae; mannan; gliadin; betalactoglobulin; ovalbuntin; MEDICINE; MEDICIN;

    Sammanfattning : In an epidemiological study of the incidence of Crohn's disease in Orebro county during the 25-year period 1963-1987, the mean annual incidence was 6.1/105 inhabitants. During the first five year period the mean incidence was 4.3 but during the following four quinquennia the incidence was stable at around 6. LÄS MER

  4. 3. Short- and Long-Term Influences of Education, Health Indicators, and Crime on Labor Market Outcomes : Five Essays in Empirical Labor Economics

    Författare :Elisabeth Lång; Ali M. Ahmed; Judy Rich; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; education; health indicators; crime; labor market outcomes; family background; twins; field experiments;

    Sammanfattning : The objective of this thesis is to improve the understanding of how several individual characteristics, namely education (years of schooling), health indicators (height, weight, smoking, alcohol consumption, and exercise), criminal behavior, and crime victimization, influence labor market outcomes in the short and long run. The first part of the thesis consists of three studies in which I adopt a within-twin-pair difference approach to analyze how education, health indicators, and earnings are associated with each other over the life cycle. LÄS MER

  5. 4. Equality of opportunity, heterogeneity and poverty

    Författare :William Nilsson; Karl-Gustaf Löfgren; Tomas Sjögren; Anders Björklund; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Equality of opportunity; Semiparametric; Poverty; Heterogeneity; State dependence; Twins; Unemployment; Divorce; Spousal response; Selection; Panel data; Nationalekonomi; Economics; Nationalekonomi; nationalekonomi; Economics;

    Sammanfattning : Paper [I] studies equality of opportunity in Sweden. The distinction between circumstances that constrain an individual’s opportunities and the individual choices also affecting a particular outcome is the main idea of theories of equality of opportunity. LÄS MER

  7. 5. Longitudinal study of the impact on hearing from aging, genetic background and environmental exposures in male twins

    Författare :Renata Bogo; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Male twins; Longitudinal cohort study; Aging; Genetic influences; Hearing loss Tinnitus; Pure–Tone Average; Threshold shift; Prevalence; Incidence proportion; Noise exposure; Job–Exposure Matrix; Occupational work code;

    Sammanfattning : Background: Hearing loss is a process that normally develops over many years, and the ability to hear high–frequency sounds is often reduced first. Age, repeated exposure to loud noise and other risk factors, diseases, medications and injury, can damage the various structures of the ear and interfere with hearing. LÄS MER