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Vol. 45. Issue 3.
Pages 227-233 (May - June 2017)
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Vol. 45. Issue 3.
Pages 227-233 (May - June 2017)
Original Article
DOI: 10.1016/j.aller.2016.09.005
The influence of gender and atopy in the relationship between obesity and asthma in childhood
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N. Alvarez Zalloa,
Corresponding author
noealza@gmail.com

Corresponding author.
, I. Aguinaga-Ontosob, I. Alvarez-Alvarezb, F. Guillén-Grimab,c,d, C. Azcona San Juliand,e
a Extrahospitalary Pediatric Emergency Service, Osasunbidea, Pamplona, Navarra, Spain
b Department of Health Sciences, Public University of Navarra, Spain
c Preventive Medicine, Clínica Universidad de Navarra, Pamplona, Navarra, Spain
d Navarra Institute for Health Research (IdiSNA), Spain
e Paediatric Endocrinology Unit, Department of Pediatrics, Clínica Universidad de Navarra, Pamplona, Navarra, Spain
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Tables (6)
Table 1. Characteristics of the subjects and prevalence of asthma symptoms.
Table 2. Prevalence of asthma symptoms by age group and sex.
Table 3. Association between asthma symptoms and gender, adjusted by age, breast feeding, mother's education and parental smoking.
Table 4. Association between overweight and obesity and asthma symptoms at 6–7 year olds and 13–14 year olds. Data are OR (95% CI) and are adjusted for age, sex, breast feeding, mother's education and parental smoking.a
Table 5. Association between overweight and obesity and symptoms of asthma, stratified by gender. Data are OR (95% CI) and are adjusted for age, breast feeding, mother education and parental smoking.a
Table 6. Association between overweight, obesity, symptoms of asthma and the coexistence of rhinoconjunctivitis, adjusted for age, sex, breast feeding, mother's education and parental smoking.a
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Abstract
Background

The objective of the study was to examine the relationship between asthma and overweight–obesity in Spanish children and adolescents and to determine whether this relationship was affected by gender and atopy.

Methods

The study involves 8607 Spanish children and adolescents from the International Study of Asthma and Allergies in Childhood phase III. Unconditional logistic regression was used to obtain adjusted odds ratios (OR) and 95% confidence intervals (95% CI) for the association between asthma symptoms and overweight–obesity in the two groups. Afterwards, it was stratified by sex and rhinoconjunctivitis.

Results

The prevalence of overweight and obesity in 6–7-year-old children was 18.6% and 5.2% respectively and in 13–14 year-old teenagers was 11.4% and 1.1% respectively. Only the obese children, not the overweight children, of the 6–7 year old group had a higher risk of any asthma symptoms (wheezing ever: OR 1.68 [1.15–2.47], asthma ever: OR 2.29 [1.43–3.68], current asthma 2.56 [1.54–4.28], severe asthma 3.18 [1.50–6.73], exercise-induced asthma 2.71 [1.45–5.05]). The obese girls had an increased risk of suffering any asthma symptoms (wheezing ever: OR 1.73 [1.05–2.91], asthma ever: OR 3.12 [1.67–5.82], current asthma 3.20 [1.65–6.19], severe asthma 4.83[1.94–12.04], exercise-induced asthma 3.68 [1.67–8.08]). The obese children without rhinoconjunctivitis had a higher risk of asthma symptoms.

Conclusions

Obesity and asthma symptoms were associated in 6–7 year-old children but not in 13–14 year-old teenagers. The association was stronger in non-atopic children and obese girls.

Keywords:
Adolescents
Atopic
Asthma
Child
Obesity

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