Dépôt numérique
RECHERCHER

Obesity Predicts Shorter Time to First Exacerbation in Pediatric Patients with Uncontrolled Mild to Moderate Asthma

Longo, Cristina, Bartlett, Gillian, MacGibbon, Brenda, Ducharme, Francine M. et Barnett, Tracie A (2016). Obesity Predicts Shorter Time to First Exacerbation in Pediatric Patients with Uncontrolled Mild to Moderate Asthma In: 32nd International Conference on Pharmacoepidemiology & Therapeutic Risk Management, August 25–28, 2016, The Convention Centre Dublin, Dublin, Ireland.

Ce document n'est pas hébergé sur EspaceINRS.

Résumé

Background: Although childhood obesity has been linked to poor asthma control, other studies have re- futed this claim. Such inconsistencies may be due to the lack of clinical severity indicators and asthma diag- nosis ascertainment in administrative databases; thus, the effect of weight status on asthma control remains to be elucidated in children using clinical data.

Objectives: To assess if BMI percentile is a significant predictor of time to first exacerbation among children with mild to moderate uncontrolled asthma.

Methods: We conducted a retrospective cohort study from clinical data linked to health and drug administra- tive databases. The cohort consisted of children aged 5-18 years with confirmed asthma, followed by the Montreal Children’s Hospital’s Asthma Center (AC) from January 1 2000 to September 31 2007 in QC, Canada. Patients were included at cohort entry if they were newly stepped-up to a higher-dose inhaled corti- costeroid (ICS) monotherapy (MT) or ICS combina- tion therapy (CT),i.e. with Long-Acting Beta2- Agonists or Leukotriene Receptor Antagonists as add-on therapies, from a low-dose ICS regimen. Ex- clusion criteria were: bronchopulmonary dysplasia, cystic fibrosis, or not covered by the public drug insur- ance plan. Patients were followed until the date of first exacerbation, lost-to-follow-up or end of 1-year fol- low-up, whichever occurred first. Age- and sex-spe- cific BMI percentiles were computed using the WHO growth charts at cohort entry and subsequent AC visits. Exacerbation was defined as any ED visit, hos- pitalization, or use of oral corticosteroids for asthma. A Cox model was used to determine the effect of time-varying BMI percentile on hazard of first exacerbation.

Results: The final sample consisted of 355 children newly stepped-up to ICS MT (N = 252) or ICS CT (N=103), with 234 (65.9%) events during follow-up. For every 10 unit increase in BMI percentile, the haz- ard of exacerbation increased by 31% (HR 1.31, 95% CI 1.20-1.43), after adjusting for confounders.

Conclusions: Excess weight is an important predictor of exacerbation-free time in pediatric asthma. Further research is warranted to understand the pathology of obese-asthma in children.

Type de document: Document issu d'une conférence ou d'un atelier
Informations complémentaires: Pharmacoepidemiology and Drug Safety 25(suppl 3):179 Meeting Abstract: 305 10.1002/pds
Mots-clés libres: -
Centre: Centre INRS-Institut Armand Frappier
Date de dépôt: 26 févr. 2019 21:29
Dernière modification: 25 nov. 2020 19:13
URI: https://espace.inrs.ca/id/eprint/5760

Actions (Identification requise)

Modifier la notice Modifier la notice