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Childhood obesity and asthma control in the GALA II and SAGE II studies.

Borrell, Luisa N; Nguyen, Elizabeth A; Roth, Lindsey A; Oh, Sam S; Tcheurekdjian, Haig; Sen, Saunak; Davis, Adam; Farber, Harold J; Avila, Pedro C; Brigino-Buenaventura, Emerita; Lenoir, Michael A; Lurmann, Fred; Meade, Kelley; Serebrisky, Denise; Rodriguez-Cintron, William; Kumar, Rajesh; Rodriguez-Santana, Jose R; Thyne, Shannon M; Burchard, Esteban G.
Am J Respir Crit Care Med; 187(7): 697-702, 2013 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-23392439
RATIONALE: Obesity is associated with increased asthma morbidity, lower drug responsiveness to inhaled corticosteroids, and worse asthma control. However, most prior investigations on obesity and asthma control have not focused on pediatric populations, considered environmental exposures, or included minority children.


To examine the association between body mass index categories and asthma control among boys and girls; and whether these associations are modified by age and race/ethnicity.


Children and adolescents ages 8-19 years (n = 2,174) with asthma were recruited from the Genes-environments and Admixture in Latino Americans (GALA II) Study and the Study of African Americans, Asthma, Genes, and Environments (SAGE II). Ordinal logistic regression was used to estimate odds ratios (OR) and their confidence intervals (95% CI) for worse asthma control.


In adjusted analyses, boys who were obese had a 33% greater chance of having worse asthma control than their normal-weight counterparts (OR, 1.33; 95% CI, 1.04-1.71). However, for girls this association varied with race and ethnicity (P interaction = 0.008). When compared with their normal-weight counterparts, obese African American girls (OR, 0.65; 95% CI, 0.41-1.05) were more likely to have better controlled asthma, whereas Mexican American girls had a 1.91 (95% CI, 1.12-3.28) greater odds of worse asthma control.


Worse asthma control is uniformly associated with increased body mass index in boys. Among girls, the direction of this association varied with race/ethnicity.
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