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High prevalence of hospitalisation for asthma in a population-based paediatric sample
  1. Manuel Ferreira-Magalhães1,2,3,
  2. Ana Sá-Sousa2,
  3. Mário Morais-Almeida4,
  4. Luís filipe Azevedo2,5,
  5. Inês Azevedo1,3,
  6. Ana Margarida Pereira2,6,
  7. João Almeida Fonseca2,5,6
  1. 1Paediatric Department, Centro Hospitalar de S. João, Porto, Portugal
  2. 2CINTESIS-Centre for Research in Health Technologies and Information Systems, Faculty of Medicine, Porto University, Porto, Portugal
  3. 3Paediatric Department—Faculty of Medicine, Porto University, Porto, Portugal
  4. 4Allergy and Clinical Immunology Department, CUF Descobertas Hospital, Lisbon, Portugal
  5. 5Health Information and Decision Sciences Department—Faculty of Medicine, Porto University, Porto, Portugal
  6. 6Allergy Unit, Instituto & Hospital CUF, Porto, Portugal
  1. Correspondence to João Almeida Fonseca, CINTESIS-Center for Health Technology and Services Research, Rua Dr. Plácido da Costa, s/n, Centro de Investigação Médica, Faculdade de Medicina da Universidade do Porto, Piso 2, edifício nascente, 4200-450, Porto, Portugal; jfonseca{at}

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The asthma prevalence and burden are high among children. However, available data for asthma hospitalisation in children have been mainly reported as annual rates of asthma hospitalisations.1 The proportion of children with asthma that are hospitalised because of asthma during their lifetime is still unknown.

INASMA was a cross-sectional, population-based, all-age, nationwide telephone survey conducted in 2010 to estimate asthma prevalence and control in Portugal. Details on INASMA methods are described elsewhere.2 We report the proportion of lifetime hospitalisation (LH) for asthma in Portuguese children and adolescents aged 6–17 years (hereafter referred to as ‘children’). INASMA included 563 participants in this age group, representative of the Portuguese paediatric population.3 This sample size allowed us to estimate the prevalence of LH with a margin of error of 0.1, considering a …

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  • Contributors Manuel Ferreira-Magalhães participated in data analysis, interpretation of results and wrote the manuscript draft. Ana Sá-Sousa participated in data collection, data analysis and reviewed the manuscript. Mário Morais-Almeida participated in study conception and critical review of the manuscript. Filipe Azevedo participated in study design and reviewed the manuscript. Inês Azevedo participated in interpretation of results and critical review of the manuscript. Ana Margarida Pereira participated in data analysis and critical review of the manuscript. João A. Fonseca is responsible for the INASMA study and participated in all stages and tasks.

  • Competing interests None.

  • Ethics approval Ethics Committee of Centro Hospitalar S. João, Porto, Portugal.

  • Provenance and peer review Not commissioned; externally peer reviewed.