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Träfflista för sökning "WFRF:(Almqvist C) ;pers:(Lundholm Cecilia)"

Sökning: WFRF:(Almqvist C) > Lundholm Cecilia

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1.
  • Khashan, Ali S, et al. (författare)
  • Gestational age and birth weight and the risk of childhood type 1 diabetes : a population-based cohort and sibling design study
  • 2015
  • Ingår i: Diabetes Care. - Stockholm : Karolinska Institutet, Dept of Medical Epidemiology and Biostatistics. - 0149-5992 .- 1935-5548.
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: We investigated the effects of gestational age, birthweight, small for gestational age (SGA) and large for gestational age (LGA) on childhood type 1 diabetes. Methods: We conducted a population-based cohort study of all singleton live births in Sweden between 1973-2009 and a sibling-control study. Perinatal data were extracted from the Swedish Medical Birth Register. Children with type 1 diabetes diagnosis were identified from the Swedish National Patient Register. Log-linear Poisson regression and conditional logistic regression were used for data analysis. Results: The study cohort consisted of 3,624,675 singleton live births (42,411,054 person-years). There were 13,944 type 1 diabetes cases during the study period. The sibling-control study consisted of 11,403 children with type 1 diabetes and 17,920 siblings. Gestational age between 33-36 weeks (RR=1.18; [95%CIs: 1.09, 1.28) and 37-38 weeks (RR=1.12; [95%CIs: 1.07, 1.17]) was associated with type 1 diabetes in the cohort study and remained significant in the sibling-control study. SGA (RR=0.83; [95%CIs: 0.75, 0.93]) and LGA (RR=1.14; [95%CIs: 1.04, 1.24]) were associated with type 1 diabetes in the cohort study. The SGA association remained unchanged in the sibling study while the LGA association disappeared. Very low birthweight was associated with a reduced risk of type 1 diabetes. Conclusions: The findings suggest a small association between gestational age and type 1 diabetes that is not likely due to familial confounding factors. Gestational age and type 1 diabetes may be related to insulin resistance due to early life growth restriction or altered gut microbiota in preterm babies.
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2.
  • Khashan, Ali S, et al. (författare)
  • Mode of obstetrical delivery and type 1 diabetes : a sibling design study
  • 2014
  • Ingår i: Pediatrics. - Stockholm : Karolinska Institutet, Dept of Medical Epidemiology and Biostatistics. - 0031-4005 .- 1098-4275.
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVES: We investigated the association between cesarean section (CS) and type 1 diabetes (T1D), and if the association remains after accounting for familial confounding by using a sibling-control design. METHODS: We conducted a population-based cohort study of all singleton live births in Sweden between 1982 and 2009, followed by sibling-control analyses. T1D diagnoses were identified from the Swedish National Patient Register. Mode of delivery was categorized into unassisted vaginal delivery (reference group), instrumental vaginal delivery (IVD), emergency CS, and elective CS. The statistical analysis was conducted in 2 steps: firstly log-linear Poisson regression with aggregated person-years by using the full cohort; secondly, conditional logistic regression for sibling-control analyses. The sibling analysis included siblings who were discordant for both mode of delivery and T1D. RESULTS: In the cohort analyses (N = 2 638 083), there was an increased risk of childhood T1D among children born by elective CS (adjusted relative risk [RR] = 1.15 [95% confidence interval: 1.06-1.25]) and IVD (RR=1.14 [1.06-1.23]) but not emergency CS (RR = 1.02 [0.95-1.11]) when compared with children born by unassisted vaginal birth. However, the effect of elective CS and IVD on childhood T1D almost disappeared and became nonsignificant in the sibling-control analyses. CONCLUSIONS: The present findings suggest a small association between elective CS and IVD and T1D. The sibling-control results, however, suggest that these findings are not consistent with causal effects of mode of delivery on T1D and may be due to familial confounders such as genetic susceptibility and environmental factors.
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3.
  • Medsker, Brock H, et al. (författare)
  • Maternal depressive symptoms, maternal asthma, and asthma in school-aged children
  • 2017
  • Ingår i: Annals of Allergy, Asthma & Immunology. - Stockholm : Karolinska Institutet, Dept of Medical Epidemiology and Biostatistics. - 1081-1206. ; 118:1, s. 55-U146
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Little is known about the joint effects of maternal asthma and maternal depression on childhood asthma. OBJECTIVE: To examine whether maternal depression and maternal asthma lead to greater risk of childhood asthma than maternal asthma alone. METHODS: Cross-sectional studies of children (6-14 years old) in San Juan, Puerto Rico (n = 655) and Sweden (n = 6,887) were conducted. In Puerto Rico, maternal depressive symptoms were defined using the Center for Epidemiologic Studies Depression Scale (CES-D) questionnaire. In Sweden, maternal physician-diagnosed depression was derived from national registries, and maternal depressive symptoms were defined using an abbreviated CES-D questionnaire. Childhood asthma was defined as physician-diagnosed asthma plus current wheeze (in Puerto Rico) or plus medication use (in Sweden). Logistic regression was used for multivariable analysis. RESULTS: Compared with Puerto Rican children whose mothers had neither asthma nor depressive symptoms, those whose mothers had asthma but no depressive symptoms had 3.2 times increased odds of asthma (95% confidence interval [CI] = 2.1-4.8) and those whose mothers had asthma and depressive symptoms had 6.5 times increased odds of asthma (95% CI = 3.3-13.0). Similar results were obtained for maternal depression and maternal asthma in the Swedish cohort (odds ratio for maternal asthma without maternal depression = 2.8, 95% CI = 2.1-3.7; odds ratio for maternal asthma and maternal depression = 4.0, 95% CI = 1.7-9.6). Although the estimated effect of maternal asthma on childhood asthma was increased when maternal depressive symptoms (Puerto Rico) or maternal depression (Sweden) was present, there were no statistically significant additive interactions. CONCLUSION: Maternal depression can further increase the risk of asthma in children whose mothers have a history of asthma.
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