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Dog characteristics and future risk of asthma in children growing up with dogs [Elektronisk resurs]

Fall, Tove, 1979- (författare)
Ekberg, Sara (författare)
Lundholm, Cecilia (författare)
Fang, Fang (författare)
Almqvist, Catarina (författare)
Uppsala universitet Science for Life Laboratory, SciLifeLab (utgivare)
Uppsala universitet Medicinska och farmaceutiska vetenskapsområdet (utgivare)
Publicerad: NATURE PUBLISHING GROUP, 2018
Engelska.
Ingår i: Scientific Reports. - 2045-2322. ; 8
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  • There is observational evidence that children exposed to dogs in early life are at lower risk of asthma. It is unknown whether this association is modified by dog characteristics such as sex, breed, number of dogs, and dog size. The aim of this study was to determine whether different dog characteristics modify the risk of asthma among children exposed to dogs during their first year of life. In the main analysis, we used national register data for all children born in Sweden from Jan 1st 2001 to Dec 31st 2004 with a registered dog in the household during their first year of life (n = 23,585). We used logistic regression models to study the association between dog characteristics and the risk of asthma or allergy diagnosis and medication at age six. The prevalence of asthma at age six was 5.4%. Children exposed to female dogs had lower risk of asthma compared to those exposed to male dogs, odds ratio, OR= 0.84 (95% confidence interval, CI 0.74 to 0.95). Children with two dogs or more had lower risk of asthma than those with one dog only, OR= 0.79 (95%Cl 0.65 to 0.95). Children whose parents had asthma and allergy had a higher frequency of exposure to dog breeds anecdotally described as "hypoallergenic" compared to those parents without asthma or allergy (11.7% vs 7.6%, p < 0.001). Exposure to these breeds were associated with higher risk of allergy OR= 1.27 (95% CI 1.02 to 1.59) but not asthma. In conclusion, we found evidence of an association between the sex of dog and the number of dogs with a lower risk of childhood asthma in dog-exposed children. 

Ämnesord

Medical and Health Sciences  (hsv)
Clinical Medicine  (hsv)
Respiratory Medicine and Allergy  (hsv)
Medicin och hälsovetenskap  (hsv)
Klinisk medicin  (hsv)
Lungmedicin och allergi  (hsv)

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government publication  (marcgt)
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