Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
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TY - JOUR
T1 - Maternal hypothyroidism in the perinatal period and childhood asthma in the offspring
AU - Liu, Xiaoqin
AU - Andersen, Stine Linding
AU - Olsen, Jørn
AU - Agerbo, Esben
AU - Schlünssen, Vivi
AU - Dharmage, Shyamali Chandrika
AU - Munk-Olsen, Trine
N1 - © 2017 EAACI and John Wiley and Sons A/S. Published by John Wiley and Sons Ltd.
PY - 2018/4
Y1 - 2018/4
N2 - Background: There is increasing interest in the possible link between maternal hypothyroidism in the perinatal period and childhood asthma risk. We explored this in this study while accounting for the timing of hypothyroidism diagnosis. Further, we evaluated whether the risk was moderated by thyroid hormone treatment during pregnancy. Methods: We conducted a population-based cohort study using Danish national registers. All live-born singletons in Denmark from 1998 to 2007 were identified. Maternal hypothyroidism and asthma in the children were defined by data from the Patient Register and Prescription Registry. We estimated incidence rate ratios (IRRs) of asthma among children born to hypothyroid mothers versus children born to mothers with no recorded thyroid dysfunction using Poisson regression models. Results: Of 595 669 children, 3524 children were born to mothers with hypothyroidism diagnosed before delivery and 4664 diagnosed after delivery. Overall, 48 990 children received treatment for asthma. The IRRs of asthma was 1.16 (95% confidence interval (CI): 1.03-1.30) and 1.12 (95% CI: 1.02-1.24) for children born to mothers with hypothyroidism diagnosed before and after delivery, compared to children born to mothers with no thyroid dysfunction. The highest risk was observed among children born to mothers with hypothyroidism diagnosed before delivery who did not receive thyroid hormone treatment during pregnancy (IRR=1.37, 95% CI: 1.04-1.80). Conclusion: Our findings suggest that maternal hypothyroidism, especially when it is untreated, increases childhood asthma risk. Early detection and appropriate treatment of hypothyroidism in pregnant women may be an area for possible prevention of childhood asthma.
AB - Background: There is increasing interest in the possible link between maternal hypothyroidism in the perinatal period and childhood asthma risk. We explored this in this study while accounting for the timing of hypothyroidism diagnosis. Further, we evaluated whether the risk was moderated by thyroid hormone treatment during pregnancy. Methods: We conducted a population-based cohort study using Danish national registers. All live-born singletons in Denmark from 1998 to 2007 were identified. Maternal hypothyroidism and asthma in the children were defined by data from the Patient Register and Prescription Registry. We estimated incidence rate ratios (IRRs) of asthma among children born to hypothyroid mothers versus children born to mothers with no recorded thyroid dysfunction using Poisson regression models. Results: Of 595 669 children, 3524 children were born to mothers with hypothyroidism diagnosed before delivery and 4664 diagnosed after delivery. Overall, 48 990 children received treatment for asthma. The IRRs of asthma was 1.16 (95% confidence interval (CI): 1.03-1.30) and 1.12 (95% CI: 1.02-1.24) for children born to mothers with hypothyroidism diagnosed before and after delivery, compared to children born to mothers with no thyroid dysfunction. The highest risk was observed among children born to mothers with hypothyroidism diagnosed before delivery who did not receive thyroid hormone treatment during pregnancy (IRR=1.37, 95% CI: 1.04-1.80). Conclusion: Our findings suggest that maternal hypothyroidism, especially when it is untreated, increases childhood asthma risk. Early detection and appropriate treatment of hypothyroidism in pregnant women may be an area for possible prevention of childhood asthma.
KW - Journal Article
KW - cohort study
KW - childhood
KW - hypothyroidism
KW - perinatal
KW - asthma
KW - MANAGEMENT
KW - THYROID-FUNCTION
KW - RISK
KW - MATURATION
KW - CHILDREN
KW - WOMEN
KW - SUBCLINICAL HYPOTHYROIDISM
KW - DYSFUNCTION
KW - PREGNANCY OUTCOMES
KW - DANISH NATIONWIDE COHORT
KW - Humans
KW - Child, Preschool
KW - Hypothyroidism/epidemiology
KW - Young Adult
KW - Pregnancy Complications/epidemiology
KW - Adult
KW - Female
KW - Child
KW - Prenatal Exposure Delayed Effects/epidemiology
KW - Risk Factors
KW - Pregnancy
KW - Asthma/epidemiology
KW - Cohort Studies
U2 - 10.1111/all.13365
DO - 10.1111/all.13365
M3 - Journal article
C2 - 29159833
VL - 73
SP - 932
EP - 939
JO - Allergy: European Journal of Allergy and Clinical Immunology, Supplement
JF - Allergy: European Journal of Allergy and Clinical Immunology, Supplement
SN - 0108-1675
IS - 4
ER -