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Inicio Allergologia et Immunopathologia Prevalence and factors associated to peanut allergy in Mexican school children
Journal Information
Vol. 45. Issue 1.
Pages 69-76 (January - February 2017)
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Vol. 45. Issue 1.
Pages 69-76 (January - February 2017)
Original Article
DOI: 10.1016/j.aller.2016.04.013
Prevalence and factors associated to peanut allergy in Mexican school children
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M. Bedolla-Barajasa,
Corresponding author
drmbedbar@gmail.com

Corresponding author.
, F. Valdez-Lópezb, G. Alcalá-Padillab,c, T.I. Bedolla-Pulidoc, V. Rivera-Mejiad, J. Morales-Romeroe
a Servicio de Alergia e Inmunología Clínica, Nuevo Hospital Civil de Guadalajara “Dr. Juan I. Menchaca”, Salvador de Quevedo y Zubieta No. 750, Colonia La Perla, Guadalajara, Jalisco, C.P. 44340, Mexico
b Servicio de Alergología e Inmunología Clínica, Hospital Civil de Guadalajara “Fray Antonio Alcalde”, Coronel Calderón No. 777, Colonia El Retiro, Guadalajara, Jalisco, C.P. 44280, Mexico
c Centro Universitario en Ciencias de la Salud, Universidad de Guadalajara, Sierra Mojada No. 950, Colonia Independencia Oriente, Guadalajara, Jalisco, C.P. 44340, Mexico
d Centro Universitario de la Cienega, Universisad de Guadalajara, Av. Universidad, Núm.1115, Lindavista, Ocotlán, Jalisco, C.P. 47820, Mexico
e Instituto de Salud Pública, Universidad Veracruzana, Av. Luis Castelazo Ayala s/n., Colonia Industrial Ánimas, Xalapa, Veracruz, C.P. 91190, Mexico
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Figures (1)
Tables (5)
Table 1. Clinical characteristics of the study's population.
Table 2. Patterns of current peanut intake.
Table 3. Frequency of symptoms related to peanut allergy.
Table 4. Factors associated to peanut allergy.
Table 5. Multivariate model of factors associated to peanut allergy.
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Abstract
Background

In our country, the prevalence and the factors associated to peanut allergy are unknown, a health problem that has been emerging worldwide.

Objective

To establish the prevalence and the factors that are associated to peanut allergy amongst school children.

Methods

This is a population-based cross-sectional study. We included 756 children aged 6–7 years. The children's parents were questioned about their peanut intake habits. A structured questionnaire was applied, it included questions regarding peanut intake; family and personal history of asthma; rhinitis; and atopic dermatitis. Allergic reactions to peanuts were registered as: probable, convincing and systematic. The statistical analyses included logistical regression models to look for associated factors.

Results

Males were 356/756 (47.1%). Peanut allergy prevalence: probable reaction: 14/756 (1.8%), convincing reaction: 8/756 (1.1%) and systemic reaction: 3/756 (0.4%). Through multivariate analysis, the presence of symptoms of allergic rhinitis (OR=4.2 95% CI 1.3–13.2) and atopic dermatitis (OR=5.2; 95% CI 1.4–19.5) during the previous year, showed significant association to probable peanut reaction. The former year, the presence of atopic dermatitis was the only variable that was substantially associated to a convincing reaction (OR=7.5; 95% CI 1.4–38.4) and to a systematic reaction (OR=45.1; 95% CI 4.0–510.0), respectively.

Conclusions

The reported prevalence of peanut allergy was consistent with that found in previous studies; symptoms of allergic rhinitis and atopic dermatitis were identified as associated factors to peanut allergy.

Keywords:
Peanut allergy
Prevalence
Children
Food allergy
Epidemiology
Abbreviations:
95% CI
OR

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