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Risk factors for atopic and nonatopic asthma in Puerto Rican children
Jeremy Landeo-Gutierrez1, Yueh-Ying Han1, Erick Forno1
1Division of Pediatric Pulmonary Medicine, UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, Pennsylvania.
Insights
This study identified key risk factors for childhood asthma in Puerto Rico. Modifiable factors like diet, body mass index (BMI), and environmental exposures are crucial for preventing atopic and nonatopic asthma.
Area of Science:
- Environmental Health
- Pediatric Allergy
- Epidemiology
Background:
- Limited understanding of asthma risk factors in Puerto Rican children.
- Focus on identifying modifiable risk factors for atopic and nonatopic asthma.
Purpose of the Study:
- To identify modifiable risk factors for atopic and nonatopic asthma in a vulnerable pediatric population in Puerto Rico.
- To inform targeted public health interventions.
Main Methods:
- Case-control study in San Juan, Puerto Rico.
- Included 305 children with asthma and 327 controls.
- Asthma defined by physician diagnosis and wheezing; atopic vs. nonatopic asthma differentiated by IgE levels.
- Logistic regression used for multivariable analysis.
Main Results:
- Atopic asthma associated with higher BMI z-score, prematurity, parental asthma, gun violence exposure, and pet birds.
- Unhealthy diet linked to increased odds of both atopic and nonatopic asthma.
- Nonatopic asthma associated with parental asthma, early-life second-hand smoke (SHS) exposure, and daycare attendance.
Conclusions:
- Identified modifiable risk factors for atopic asthma (BMI, gun violence exposure) and nonatopic asthma (SHS, daycare).
- Dietary improvements can reduce asthma risk in both forms.
- Findings highlight targets for asthma prevention in Puerto Rican children.
Background:
Little is known about the risk factors for atopic and nonatopic asthma among children in Puerto Rico. We aimed to identify modifiable risk factors for atopic and nonatopic asthma in this vulnerable population.
Methods:
Case-control study of children with (n = 305) and without (n = 327) asthma in San Juan (Puerto Rico). Asthma was defined as physician-diagnosed asthma and wheeze in the previous year. Atopic asthma (n = 210) was defined as asthma and greater than or equal to one positive IgE to aero-allergens. Nonatopic asthma (n = 95) was defined as asthma and no positive IgE to the allergens tested. Logistic regression was used for the multivariable analysis of atopic and nonatopic asthma.
Results:
In a multivariable analysis, body mass index (BMI) z score, prematurity, parental asthma, lifetime exposure to gun violence, and having a bird in the child's home were associated with increased odds of atopic asthma, while each one-point increment in a dietary score (range: -2 [least healthy diet] to +2 [healthiest diet]) was associated with 37% reduced odds of atopic asthma (95% confidence interval [CI] = 0.48-0.81; P < .01). In a separate multivariable analysis, parental asthma, early-life second-hand smoke (SHS) exposure, and daycare attendance in the first year of life were significantly associated with increased odds of nonatopic asthma, while each one-point increment in the dietary score was associated with 42% reduced odds of nonatopic asthma (95% CI = 0.45-0.76; P < .01).
Conclusions:
We have identified potentially modifiable risk factors for atopic asthma (eg, BMI and gun violence), nonatopic asthma (eg, early-life SHS and daycare attendance), or both (eg, an unhealthy diet) in Puerto Rican children.
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