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Journal of Tropical Pediatrics Advance Access originally published online on September 27, 2008
Journal of Tropical Pediatrics 2009 55(1):20-25; doi:10.1093/tropej/fmn067
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© The Author [2008]. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Factors Related to Lower Adherence Rates to Inhaled Corticosteroids in Children and Adolescents: A Prospective Randomized Cohort Study

Laura Lasmara, Paulo Camargosa, Jean Bousquetb, Eugênio Goularta, Emília Sakuraic and Marina Carvalhaisd

aPaediatric Pulmonology Unit, University Hospital, Federal University of Minas Gerais, Belo Horizonte, Brazil
bService des Maladies Respiratoires, Hôpital Arnaud de Villeneuve, Montpellier, France
cDepartment of Statistics, Exact Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
dChest physiotherapist, Paediatric Pulmonology Unit, University Hospital, Federal University of Minas Gerais, Belo Horizonte, Brazil

Correspondence: Prof. Paulo A. M. Camargos, Department of Paediatrics, School of Medicine, Federal University of Minas Gerais, Avenida Alfredo Balena 190/Room 267, 30130-100 Belo Horizonte, Brazil. Tel.: +55-31-3409-9773; Fax: +55-31-3409-9664. Email: <pcamargs{at}medicina.ufmg.br or pauloamcamargos{at}gmail.com>.


  Abstract

Asthma morbidity is high, partly due to low adherence to inhaled corticosteroids (ICS). This study aims to assess rates and factors related to low adherence to ICS over time in asthmatic children and adolescents.

Methods: A concurrent cohort study was carried out for 24 months in 168 randomly selected patients suffering from persistent moderate asthma. All of them were given beclomethasone dipropionate (BDP) free of charge. Adherence rates were verified by pharmacy records (doses filled/doses prescribed). A multivariate analysis evaluated factors related with low adherence rates.

Results: Overall adherence rates were 72.5, 58.6 and 61.1% in the 4th, 12th and 24th months of follow-up, respectively. Factors associated to adherence rates <70% were: mother's schooling level (p = 0.03), replacement of the caregiver (p = 0.03), prescription greater than two puffs/day (p = 0.005), absence of rhinosinusitis (p = 0.002) and age under 7 years (p = 0.04). Only the number of consultations lower than two in a 4-month period was associated to a lower adherence rate in all study periods (p = 0.02).

Conclusions: Adherence rates decreased over time, even in patients who had received the medication free of charge, and factors related to lower adherence changed during the follow-up. Results have shown that adherence had a dynamic pattern and its determinants should be re-evaluated continuously. Only the number of consultations was associated to a lower adherence rate in all periods, pointing out that health programs must recognize and facilitate the access of patients needing special care, which can contribute for better adherence and reducing asthma morbidity.

Key Words: asthma • inhalation therapy • adherence


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J Trop Pediatr 2009 55: i. [Full Text]  





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