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Träfflista för sökning "WFRF:(Almqvist C) ;pers:(Boomsma DI)"

Sökning: WFRF:(Almqvist C) > Boomsma DI

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  • Jelenkovic, A, et al. (författare)
  • Birth size and gestational age in opposite-sex twins as compared to same-sex twins: An individual-based pooled analysis of 21 cohorts
  • 2018
  • Ingår i: Scientific reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 8:1, s. 6300-
  • Tidskriftsartikel (refereegranskat)abstract
    • It is well established that boys are born heavier and longer than girls, but it remains unclear whether birth size in twins is affected by the sex of their co-twin. We conducted an individual-based pooled analysis of 21 twin cohorts in 15 countries derived from the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins), including 67,850 dizygotic twin individuals. Linear regression analyses showed that boys having a co-twin sister were, on average, 31 g (95% CI 18 to 45) heavier and 0.16 cm (95% CI 0.045 to 0.274) longer than those with a co-twin brother. In girls, birth size was not associated (5 g birth weight; 95% CI −8 to −18 and −0.089 cm birth length; 95% CI −0.202 to 0.025) with the sex of the co-twin. Gestational age was slightly shorter in boy-boy pairs than in boy-girl and girl-girl pairs. When birth size was standardized by gestational age, the magnitude of the associations was attenuated in boys, particularly for birth weight. In conclusion, boys with a co-twin sister are heavier and longer at birth than those with a co-twin brother. However, these differences are modest and partly explained by a longer gestation in the presence of a co-twin sister.
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  • Slob, EMA, et al. (författare)
  • Early-life antibiotic use and risk of asthma and eczema: results of a discordant twin study
  • 2020
  • Ingår i: The European respiratory journal. - : European Respiratory Society (ERS). - 1399-3003 .- 0903-1936. ; 55:4
  • Tidskriftsartikel (refereegranskat)abstract
    • Early-life antibiotic use has been associated with the development of atopic diseases, but the aetiology remains unclear. To elucidate the aetiology, we used a discordant twin design to control for genetic and environmental confounding.MethodsWe conducted a retrospective cohort study in twins aged 3–10 years from the Netherlands Twin Register (NTR, n=35 365) and a replication study in twins aged 9 years from the Childhood and Adolescent Twin Study in Sweden (CATSS, n=7916). Antibiotic use was recorded at age 0–2 years. Doctor-diagnosed asthma and eczema were reported by parents when children were aged 3–12 years in both cohorts. Individuals were included in unmatched analyses and in co-twin control analyses with disease discordant twin pairs.ResultsEarly-life antibiotic use was associated with increased risk of asthma (NTR OR 1.34, 95% CI 1.28–1.41; CATSS OR 1.45, 95% CI 1.34–1.56) and eczema (NTR OR 1.08, 95% CI 1.03–1.13; CATSS OR 1.07, 95% CI 1.01–1.14) in unmatched analyses. Co-twin analyses in monozygotic and dizygotic twin pairs showed similar results for asthma (NTR OR 1.54, 95% CI 1.20–1.98; CATSS OR 2.00, 95% CI 1.28–3.13), but opposing results for eczema in the NTR (OR 0.99, 95% CI 0.80–1.25) and the CATSS (OR 1.67, 95% CI 1.12–2.49). The risk of asthma increased for antibiotics prescribed for respiratory infections (CATSS OR 1.45, 95% CI 1.34–1.56), but not for antibiotics commonly used for urinary tract/skin infections (CATSS OR 1.02, 95% CI 0.88–1.17).ConclusionChildren exposed to early-life antibiotic use, particularly prescribed for respiratory infections, may be at higher risk of asthma. This risk can still be observed when correcting for genetic and environmental factors. Our results could not elucidate whether the relationship between early-life antibiotic use and eczema is confounded by familial and genetic factors.
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  • Resultat 1-7 av 7

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