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Allergy Asthma Proc. 2017 Jan 1;38(1):63-69. doi: 10.2500/aap.2017.38.4016.

Childhood obesity in pediatric patients with difficult-to-control asthma in a tertiary pediatric subspecialty clinic.

Abstract

BACKGROUND:

Identifying clinical features associated with difficult-to-control asthma will help address overall control and more-effective asthma management.

OBJECTIVE:

To evaluate our clinical observation that the proportion of patients who are overweight or obese is significantly higher in patients with difficult-to-control asthma than in patients with well-controlled asthma.

METHODS:

This was a retrospective chart review of 400 patients, ages 5 to 18 years. Cases (n = 200) were identified as 100 subjects with difficult-to-control asthma and an inhaled corticosteroid dose of ≥1000 μg/day and 100 subjects with well-controlled asthma and an inhaled corticosteroid dose of ≤500 μg/day. The control group included 200 subjects without asthma. Multivariable logistic regression models were used to assess the relationships between asthma status and weight status, age, race, and sex.

RESULTS:

The mean body mass index percentile (± standard deviation at 95% confidence interval) was significantly higher in the difficult-to-control asthma group versus the well-controlled asthma group versus the control group (74.66 ± 28.19 versus 54.25 ± 29.92 versus 55.19 ± 32.54; p < 0.001). Thirty-six percent of the difficult-to-control patients with asthma were obese (versus 6% of the patients with well-controlled asthma [p < 0.001] versus 13% of patients without asthma [p = 0.002]), and 47% normal weight (versus 79% of the patients with well-controlled asthma versus 75% of patients without asthma; p < 0.001). The mean age and the proportion of African Americans in the difficult-to-control asthma group were significantly higher than in the well-controlled asthma group and in the control group (p < 0.001).

CONCLUSION:

The results of this study demonstrated a significant association between severe persistent difficult-to-control asthma and obesity, age, and race. Patients who are obese and have difficult-to-control asthma need treatment approaches that address both asthma control and weight management.

PMID:
28052803
DOI:
10.2500/aap.2017.38.4016
[Indexed for MEDLINE]

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