Search for dissertations about: "dizygotic"

Showing result 1 - 5 of 37 swedish dissertations containing the word dizygotic.

2. 1. Prospective studies of hormonal and life-style related factors and risk of cancer

   Author : Sara Wirén; Pär Stattin; Håkan Jonsson; Tanja Stocks; Alicja Wolk; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; prostate cancer; epidemiology; androgens; risk factors; fatherhood status; dizygotic twins; height; cohort; case-control; prospective; Cancer Epidemiology; cancerepidemiologi;

   Abstract : Background: Androgens are important in prostate cancer development but how circulating levels of androgens affect risk of prostate cancer of different aggressiveness is not clear. Being childless has been associated with a lower risk of prostate cancer, but it is not clear if this association is causal or a result of residual confounding. READ MORE

4. 2. Genetic and environmental aspects of symptomatic gallstone disease

   Author : Despina S Katsika; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Gallstone; Swedish Twin Registry; monozygotic; dizygotic; structural equation modeling; body mass index; alcohol; tobacco; ABCG8 D19 H; lith genes; association study;

   Abstract : Gallstone disease (GD) represents a major healthcare problem. Gallstones are likely to result from a complex interaction of the environment and the effects of multiple undetermined genes. READ MORE

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

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

   Abstract : 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. READ MORE

6. 4. Risk factors and adverse pregnancy outcomes in small-for-gestational-age births

   Author : Britt Clausson; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Obstetrics and gynaecology; Pregnancy; birthweight; fetal growth retardation; small-for-gestational age; maternal anthropometrics; genetic; caffeine; stillbirth; postterm pregnancy; birthweight standard; Obstetrik och kvinnosjukdomar; Obstetrics and women s diseases; Obstetrik och kvinnosjukdomar; Obstetrics and Gynaecology; obstetrik och gynekologi;

   Abstract : The studies were undertaken to evaluate risk factors and outcomes in small-for-gestational-age (SGA) births, in cohort studies using the population-based Swedish Birth, Twin and Education Registers. A cohort study of pregnant women from Uppsala County evaluated the effect on birthweight by caffeine. READ MORE

7. 5. Epidemiological studies on diverticular disease of the colon

   Author : Johan Granlund; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Objective: The aims of this thesis were to evaluate if there is an association between diverticular disease and colorectal cancer (Paper I), to assess any genetic contribution to the occurrence of diverticular disease (Paper II), determine how common hospitalization and surgery for diverticular disease are in measures of admission rates, incidence rates and lifetime risk (Paper II), and to estimate mortality in diverticulitis patients, needing hospital care (Paper IV). Methods: Swedish national registries were cross-linked through individual personal identification numbers. READ MORE