Global Asthma Network Phase I study in Mexico: prevalence of asthma symptoms, risk factors and altitude associations—a cross-sectional study

Abstract

BackgroundGlobal Asthma Network (GAN) was established in 2012 as a development to the International Study of Asthma and Allergies in Childhood to improve asthma care globally.ObjectiveTo survey asthma, allergic rhinitis and atopic dermatitis in primary and secondary school children and to investigate and evaluate its prevalence, severity, management and risk factors in Mexico.MethodsGAN Phase I is a cross-sectional, multicentre survey carried out in 15 centres corresponding to 14 Mexican cities throughout 2016–2019 using the validated Spanish language version of the GAN Phase I questionnaires. The questionnaires were completed by parents of 6–7-year-old primary school pupils (school children) and by 13–14-year-old adolescents.ResultsA total of 35 780 school children and 41 399 adolescents participated. Wheezing ever prevalence was 26.2% (95% CI 25.8% to 26.7%) in school children and 23.9% (95% CI 23.4% to 24.3%) in adolescents. The corresponding frequencies for current wheeze were 10.2% (95% CI 9.9% to 10.5%) and 11.6% (95% CI 11.2% to 11.9%). In school children, the risk factors for current wheeze were rhinitis (OR 4.484; 95% CI 3.915% to 5.134%) and rash symptoms (OR 1.735; 95% CI 1.461% to 2.059%). For adolescents, rhinitis symptoms (OR 3.492; 95% CI 3.188% to 3.825%) and allergic rhinitis diagnosis (OR 2.144; 95% CI 1.787% to 2.572%) were the most significant. For both groups, there was a negative relation with centres’ sea level altitude higher than 1500 m above mean sea level (p<0.005).ConclusionsThe most important risk factors for asthma symptoms in both age groups were the presence of rhinitis and rash symptoms or diagnosis. On the other hand, sea level altitude higher than 1500 metres was a protective factor.

The prevalence of asthma, allergic rhinitis, and eczema among school‐aged children in Qatar: A Global Asthma Network Study

“…20 On a global level, the T A B L E 1 The frequency of asthma, allergic rhinitis, and eczema among the study sample based on gender F I G U R E 2 illustrates the frequency of each disease along with any overlap. Among the study sample, 32 participants had asthma, allergic rhinitis, and eczema findings of our study are in concurrent with the increase in prevalence rates reported in other areas in the world, as in Mexico, 21 South Africa, 22 or Bangkok. 23 A study that assessed the worldwide trend of asthma symptoms across multiple centers from several countries, reported an increase in the prevalence of these symptoms in Latin America, Africa, and certain areas in Asia.…”

“…A study from Oman showed a significant increase in wheezing among 6–7 years old children over a 6 year period 20 . On a global level, the findings of our study are in concurrent with the increase in prevalence rates reported in other areas in the world, as in Mexico, 21 South Africa, 22 or Bangkok 23 . A study that assessed the worldwide trend of asthma symptoms across multiple centers from several countries, reported an increase in the prevalence of these symptoms in Latin America, Africa, and certain areas in Asia 24 …”

MIA 2021, Manejo Integral del Asma. Lineamientos para México

“…Otras herramientas ampliamente difundidas son los índices de asma (figura 10), 18 los cuales tienen la finalidad de predecir la probabilidad de persistencia de sibilancias hasta la edad escolar mediante la suma de distintos parámetros, que constituyen factores de riesgo para desarrollar asma. Los más utilizados son el Índice Predictivo del Asma (API, Asthma Predictive Index, y API-modificado).…”

“…Los más utilizados son el Índice Predictivo del Asma (API, Asthma Predictive Index, y API-modificado). Instrumentos nuevos como el Pediatric Asthma Risk Score 19 se han reconocido con un excelente rendimiento diagnóstico negativo y cuentan con aplicaciones gratuitas para teléfonos móviles, aunque por el momento solo se cuenta con versión en inglés (https://pars.research. cchmc.org/).…”

The prevalence of atopic dermatitis among children aged between 6 months and 12 years attending primary health care clinics in Qatar 2018-2019

“…A study that assessed the worldwide trend of allergic disease symptoms across multiple centres from several countries, reported an increase in the prevalence of these symptoms in Latin America, Africa, and certain areas in Asia. [17][18][19][20] In relation to gender, males in our study had higher diagnosed AD rates in all age groups. This comes in line with findings from the recent study from Qatar and previous studies form UAE, Oman and Bahrain.…”