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1.
Rev Alerg Mex ; 66(2): 147-153, 2019.
Article in Spanish | MEDLINE | ID: mdl-31200413

ABSTRACT

BACKGROUND: In Mexico, there are very few studies aimed at establishing the prevalence of allergic rhinitis (AR) and atopic dermatitis (AD) in late adolescents. OBJECTIVE: To determine the prevalence of allergic rhinitis and atopic dermatitis in late adolescents and compare it according to their gender. METHODS: A cross-sectional study that included 1992 15 to 18 year old adolescents who were recruited through a stratified and randomized probabilistic sample by clusters. The prevalence of AR (allergic rhinitis) and AD (atopic dermatitis) was identified with the questionnaire of "The International Study of Asthma and Allergies in Childhood". RESULTS: 1056 (53%) women and 936 (47%) men were included in the study. The prevalence of AR was 9.0% (95% CI = 7.8% - 10.4%); the frequency was higher in women (6.7% versus 11.1%, p = 0.001). The symptoms of rhinitis plus conjunctivitis predominated in women (16.0% versus 23.1%, p < 0.0001). The prevalence of AD was 5.2% (95% CI = 4.3% - 6.2%) and, once again, it was more frequent in women (7.7% versus 2.4%, p < 0.0001). The main factors associated with AR and AD were the female gender and a history of family atopic allergic diseases (p < 0.001). CONCLUSIONS: There was a significant difference in the prevalence of AR and AD according to gender in late adolescents; women were most affected. In addition, a history of family atopic allergic diseases was another risk factor that was linked to both diseases.


Antecedentes: En México son escasos los estudios encaminados a establecer la prevalencia de la rinitis alérgica y la dermatitis atópica en adolescentes tardíos. Objetivo: Determinar la prevalencia de rinitis alérgica y dermatitis atópica en adolescentes tardíos y compararla conforme el sexo. Métodos: Estudio transversal de 1992 adolescentes de 15 a 18 años, reclutados mediante muestreo probabilístico por conglomerados, estratificado y aleatorizado. Las prevalencias de rinitis alérgica y dermatitis atópica se identificaron con el cuestionario propuesto en The Internacional Study of Asthma and Allergies in Childhood. Resultados: Se incluyeron 1056 mujeres (53 %) y 936 hombres (47 %). La prevalencia de rinitis alérgica fue de 9.0 % (IC 95 % = 7.8-10.4); la frecuencia fue mayor en las mujeres (6.7 % versus 11.1 %, p = 0.001). Los síntomas de rinitis más conjuntivitis predominaron en las mujeres (16.0 % versus 23.1 %, p < 0.0001). La prevalencia de dermatitis atópica fue de 5.2 % (IC 95 % = 4.3-6.2); fue más frecuente en las mujeres (7.7 % versus 2.4 %, p < 0.0001). Los principales factores asociados con rinitis alérgica y dermatitis atópica fueron sexo femenino y atopia familiar (p < 0.001). Conclusiones: Se registró diferencia significativa en la prevalencia de rinitis alérgica y dermatitis atópica conforme el sexo en los adolescentes tardíos; las mujeres fueron las más afectadas. La atopia familiar fue otro factor asociado.


Subject(s)
Dermatitis, Atopic/epidemiology , Rhinitis, Allergic/epidemiology , Adolescent , Cross-Sectional Studies , Female , Humans , Male , Mexico/epidemiology , Prevalence , Sex Distribution
2.
Rev Alerg Mex ; 65(4): 331-340, 2018.
Article in Spanish | MEDLINE | ID: mdl-30602202

ABSTRACT

BACKGROUND: Late adolescents with asthma are rarely studied, since generally they are not included in children or adult groups; in addition, studies assessing asthma trends are scarce in Mexico, and their results might differ from findings in developed countries. OBJECTIVE: To determine the trends in asthma prevalence and its symptoms in late adolescents over a period of 7 years. METHODS: The prevalence of asthma and its symptoms were compared in two cross-sectional population-based cohorts, one from 2009 and the other from 2016. RESULTS: The presence of wheezing sometime in life and during the previous year was significantly increased between 2009 and 2016 (12.8 % versus 20.1 % and 7.3 % versus 10.3 %, p < 0.001 and 0.002, respectively). The prevalence of asthma went from 7.8 % in 2009 to 12.7 % in 2016 (p < 0.0001). In addition, the prevalence of allergic rhinitis (4.5 % versus 9.0 %) and atopic dermatitis (3.8 % versus 5.2 %) also showed marked increases (p < 0.0001 and 0.051, respectively). CONCLUSIONS: The prevalence of asthma and some of its symptoms in late adolescents substantially increased in a 7-year period.


Antecedentes: Los adolescentes tardíos con asma pocas veces son investigados, dado que generalmente no se incluyen en los grupos de niños ni adultos, además, en México, los estudios que evalúan la tendencia del asma son escasos y sus resultados pudieran diferir de los hallazgos en los países desarrollados Objetivo: Determinar la tendencia de la prevalencia del asma y sus síntomas en adolescentes tardíos en un periodo de siete años. Métodos: Se compararon las prevalencias de asma y sus síntomas de dos cortes transversales con base poblacional, uno en 2009 y otro en 2016. Resultados: La presencia de sibilancias alguna vez en la vida y durante el año previo se incrementó significativamente entre 2009 y 2016 (12.8 % versus 20.1 % y 7.3 % versus 10.3 %; p < 0.0001 y 0.002, respectivamente). La prevalencia del asma pasó de 7.8 % en 2009 a 12.7 % en 2016 (p < 0.0001). Adicionalmente, las prevalencias de rinitis alérgica (4.5 % versus 9.0 %) y dermatitis atópica (3.8 % versus 5.2 %) también sufrieron incrementos notorios (p < 0.0001 y 0.051 respectivamente). Conclusión: La prevalencia de asma y algunos de sus síntomas en adolescentes tardíos se incrementaron sustancialmente en los siete años previos.


Subject(s)
Asthma/diagnosis , Asthma/epidemiology , Adolescent , Age Factors , Cross-Sectional Studies , Female , Humans , Male , Mexico/epidemiology , Prevalence , Sex Distribution , Symptom Assessment , Time Factors
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