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Vol. 47. Issue 6.
Pages 523-534 (November - December 2019)
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Vol. 47. Issue 6.
Pages 523-534 (November - December 2019)
Original Article
DOI: 10.1016/j.aller.2018.12.002
Prevalence of asthma, allergic rhinitis and eczema in 6–7-year-old schoolchildren from Luanda, Angola
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M. Arraisa, O. Luluaa, F. Quificaa, J. Rosado-Pintob, J.M.R. Gamac, L. Taborda-Baratad,e,
Corresponding author
tabordabarata@fcsaude.ubi.pt

Corresponding author.
a Department of Pulmonology, Military Hospital, Rua D. Manuel I, Luanda, Angola
b Department of Immunoallergology, Hospital da Luz, Avenida Lusíada, 100, 1500-650, Lisbon, Portugal
c Centre of Mathematics and Applications, Faculty of Sciences, University of Beira Interior, Avenida Marquês d’Ávila e Bolama, 6201-001, Covilhã, Portugal
d Department of Allergy & Clinical Immunology, Cova da Beira University Hospital, Quinta do Alvito, 6200-251 Covilhã, Portugal
e CICS – Health Sciences Research Centre, University of Beira Interior, Avenida Infante D. Henrique, 6200-506 Covilhã, Portugal
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Tables (6)
Table 1. Sociodemographic data of study sample of 6–7-year-old children from Luanda.
Table 2. Prevalence rates for asthma, rhinitis and eczema.
Table 3. Clinical features of asthma in children with asthma symptoms (“Wheezing in the last 12 months”; n=485).
Table 4. Associations between the presence of rhinitis in the last 12 months and clinical asthma parameters in children with asthma symptoms (wheezing episodes in the last 12 months; n=485).
Table 5. Risk factors for probable asthma (Wheezing last 12 months).
Table 6. Adjusted odds ratios of risk factors for probable asthma (wheezing last 12 months).
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Abstract
Background

Epidemiological data have shown that the prevalence of asthma, rhinoconjunctivitis and eczema in children is still increasing, namely in Africa. However, there are no epidemiological studies on asthma or allergic diseases in Angolan children.

Objective

To study the prevalence of asthma and other allergic diseases in Angolan children.

Methods

Descriptive, observational, cross-sectional study, using the ISAAC study methodology, in the province of Luanda, Angola in 6–7-year-old children. Forty-six (8.3%) public schools were randomly selected. Data were analysed using the SPSS Statistics version 24.0 software.

Results

A total of 3080 children were studied. Results showed that the prevalence of asthma (wheezing in the previous 12 months) was 15.8%, that of rhinitis (sneezing, runny or blocked nose in the previous 12 months) was 19%, and that of eczema (itchy skin lesions in the previous 12 months) was 22%, without differences between sexes. Rhinitis was associated with a higher number of episodes of wheezing episodes, disturbed sleep and night cough, in children with asthma. Rhinitis, eczema, Split-type air conditioning system, antibiotic intake in the child's first year of life, frequent intake (more than once per month) of paracetamol and active maternal smoking were associated with a higher risk of having asthma, whereas electrical cooking was associated with a protective effect.

Conclusion

Asthma and allergic diseases are highly prevalent in children from Luanda. A strategy for preventive and control measures should be implemented.

Keywords:
Allergy
Angola
Asthma
Children
Eczema
Prevalence
Rhinitis
Risk factors

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