The Prevalence of Asthma among Iranian Children and Adolescent: A Systematic Review and Meta‐Analysis

Rahimian, Neda; Aghajanpour, Mohammad; Jouybari, Leila; Ataee, Pedram; Fathollahpour, Asadollah; Lamuch-Deli, Nasrin; Kooti, Wesam; Kalmarzi, Rasoul Nasiri

doi:10.1155/2021/6671870

Cited by 14 publications

(10 citation statements)

References 34 publications

(36 reference statements)

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“…The prevalence of asthma in children was 6%; in adolescents, it was 8%. The prevalence was 8%-9% in girls and boys, respectively [ 35 ]. In Golestan Province, northern Iran, in 2014, Mehrvar et al reported the overall prevalence of current asthma and asthma ever symptoms as 9.5% and 7.5%, respectively, with a higher prevalence of asthma in the age group of 13–14 years than in the age group of 6–7.…”

Section: Discussionmentioning

confidence: 99%

Assessing the prevalence and severity of asthma, rhinitis, and eczema among schoolchildren (6–7 and 13–14 years old) in Khuzestan, Iran: a cross-sectional survey

et al. 2022

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Background Asthma and allergic complications are the most common chronic disorders in children and adolescents. This study aimed to determine the prevalence and severity of asthma, allergic rhinitis, eczema among schoolchildren, and some related risk factors. Methods The cross-sectional study was performed in 2019 and involved 4000 students aged 6–7 years and 4000 students aged 13–14 years (both girls and boys) from urban schools in Khuzestan Province, southwestern Iran. We used the multi-stage sampling method. Data were collected using the Persian version of the International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire. Results The prevalence of current wheeze, wheeze ever and asthma ever in the age group of 6–7 years was 3.8, 4.5, and 1.8%, respectively; in the age group of 13–14 years, it was 4.4, 5.9, and 3.4, respectively. In terms of gender, males (4.9, 6.0, and 2.7 percent, respectively) had substantially higher rates of current wheeze, wheeze ever, and asthma ever compared to the girls (2.8, 3.6, and 2.0 percent, respectively) (p < 0.001). The prevalence of rhinitis, Hay fever, and eczema among young people was 5.3%, 3.5%, and 1.0%, respectively. Current wheeze was more common in children with allergic rhinitis in the last 12 months (30.3% vs. 2.7%, p < 0.001), Hay fever (32.8% vs. 0.3%, p < 0.001) and eczema (27.8% vs 3.8%, p < 0.001), compared to children who did not. Conclusions The prevalence and severity of asthma symptoms were significantly associated with allergic rhinitis, eczema, and gender.

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Section: Discussionmentioning

confidence: 99%

Assessing the prevalence and severity of asthma, rhinitis, and eczema among schoolchildren (6–7 and 13–14 years old) in Khuzestan, Iran: a cross-sectional survey

et al. 2022

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“…As to the sex-related difference, we found that the positive rate of allergens and the percentages of double-allergen sensitizations in boys were substantially higher in the total population, and the sensitizations of Der.f, Der.p , and ragweed in boys were higher than those in girls. The reason for sex differentiation may be related to hormone levels ( 18 , 19 ). However, further studies should be conducted to unveil the precise mechanisms related to the differences in age and sex.…”

Section: Discussionmentioning

confidence: 99%

Investigation of Allergic Sensitizations in Children With Allergic Rhinitis and/or Asthma

et al. 2022

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ObjectiveAllergic rhinitis (AR) and asthma are becoming one of the most prevalent diseases in children. Identifying sensitization to aeroallergens is seemed to be valuable for diagnosing allergic disease and guiding its treatment. This study aimed to analyze the profiles of sensitization to aeroallergen in children with AR and/or asthma by skin prick test (SPT) and explore the differences of sensitization between different kinds of allergic diseases, different sexes, and different ages.MethodsA total of 230 children with AR and/or asthma who were hospitalized in our hospital from June 2017 to September 2019 were eligible in this retrospective study. All patients completed standardized questionnaires and SPT. Based on the sex, age, or classification of allergic disease, the sensitizations to 13 aeroallergens were compared.ResultsOf the 230 patients, 67.4% of enrolled were positive for SPT; the top 5 allergens were Dermatophagoides pteronyssinus (Der.p) (59.3%), Dermatophagoides farina (Der.f ) (58.7%), Blomia tropicalis (Blot.) (40.3%), dog hair (36.1%), and Blattella germanica (20.4%). More than 90% of patients were sensitized to two or more allergens. As to the effect of age on aeroallergens, we found that the sensitizations of Blot., dog fur, and multiple sensitizations (≥5 allergens) were more common in adolescence (P < 0.01, P < 0.05). Regarding sex, we found that the positive rate of SPT and the percentages of double-allergen sensitizations in boys were much higher than girls (P < 0.01, P < 0.01), and the positive rate to Der.p, Der.f , and ragweed were also significantly higher in boys (P < 0.01, P < 0.05, and P < 0.05, respectively). Furthermore, we found that asthma–rhinitis multimorbidity increased the incidences of sensitizations; patients with AR and asthma had significantly higher positive rates to Der.p and Der.f when compared with the AR or asthma group (P < 0.05, P < 0.05).ConclusionAllergic sensitizations were common in children with AR and/or asthma; sex, age, and asthma–rhinitis multimorbidity might affect the prevalence of sensitizations to aeroallergens.

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“…6 The documented prevalence of asthma among Iranian children and adolescents has been 6% and 8%, respectively. 7 According to a recent survey conducted in Karaj, 10.52% of 13-14-year-old adolescents, had experienced wheezing in the past 12 months. 8 The International Study of Asthma and Allergy in Childhood (ISAAC), started in 1991, aimed to assess the prevalence of asthma and allergic diseases in various countries.…”

Section: As the Most Prevalent Chronic Inflammatory Diseasementioning

confidence: 99%

Prevalence of Asthma Symptoms in Children and Adolescents in Karaj, Iran: A Report from the Global Asthma Network Phase I Study

Fayyaz¹,

Khashayar²,

Rasmi³

et al. 2022

IJAAI

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This study is a part of the Global Asthma Network (GAN) phase I project to assess asthma symptoms in children, adolescents, and their parents in Karaj, Iran. The present cross-sectional study was conducted in 2019-2020 in Karaj, Iran, in alignment with the goals of the GAN study, including assessing asthma prevalence, severity, and risk factors. In this study, 1500 students were selected using a multistage stratified cluster sampling method from 40 public and private schools in Karaj. The entire population of children aged 6-7 years or adolescents aged 13-14 years in a given school and their parents was considered the sample unit. The GAN core questionnaires were completed for students and parents. The results showed that the response rate was 89.6%. A total of 1326 children and adolescents, 572 children aged 6-7 years, and 754 aged 13-14 years and their parents were enrolled in the study. The prevalence of ever- and current wheezing was 24% and 13.8% among 6-7-year-olds, and 18.8% and 12.3% among 13-14-year-olds, respectively. In children aged 6-7 years, parental wheezing significantly increased the chances of children wheezing (odds ratio: 3.27; 95% confidence interval: 1.70, 6.310). The current study’s findings showed that the prevalence of asthma symptoms among children and adolescents and their parents in Karaj, Iran, was mainly higher than the findings of studies conducted in other cities in Iran.

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The Prevalence of Asthma among Iranian Children and Adolescent: A Systematic Review and Meta‐Analysis

Cited by 14 publications

References 34 publications

Assessing the prevalence and severity of asthma, rhinitis, and eczema among schoolchildren (6–7 and 13–14 years old) in Khuzestan, Iran: a cross-sectional survey

Assessing the prevalence and severity of asthma, rhinitis, and eczema among schoolchildren (6–7 and 13–14 years old) in Khuzestan, Iran: a cross-sectional survey

Investigation of Allergic Sensitizations in Children With Allergic Rhinitis and/or Asthma

Prevalence of Asthma Symptoms in Children and Adolescents in Karaj, Iran: A Report from the Global Asthma Network Phase I Study

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