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Are overweight asthmatics more difficult to control?
P Saint-Pierre1, A Bourdin, P Chanez
1Institut Universitaire de Recherche Clinique, Laboratoire de Biostatistique, Montpellier, France.
Allergy
|December 21, 2005
Summary
Overweight adults with asthma have a significantly lower chance of achieving acceptable asthma control. This highlights the need for tailored asthma management strategies for individuals with excess weight.
Area of Science:
- Pulmonology
- Clinical Research
- Obesity Medicine
Background:
- The link between asthma and obesity is complex and requires further investigation.
- Understanding how excess weight impacts asthma control is crucial for effective patient management.
Purpose of the Study:
- To evaluate the influence of excess weight on the evolution of asthma control in adult asthmatics.
- To assess the effect of Body Mass Index (BMI) on transitions between acceptable and unacceptable asthma control states.
Main Methods:
- A prospective cohort study enrolled 406 adult asthmatics with persistent asthma.
- A continuous time homogeneous Markov model analyzed transitions in asthma control based on BMI (<25 vs. ≥25).
- Confounding factors including asthma severity and oral corticosteroid use were adjusted for.
Main Results:
- Overweight asthmatics (BMI ≥25) had a significantly lower risk of improving asthma control (RR=0.45 univariate, RR=0.53 multivariate).
- Transition probabilities for achieving acceptable control stabilized faster in normal-weight individuals (200 days vs. 300 days).
Conclusions:
- Excess weight is associated with poorer asthma control evolution in adult asthmatics.
- These findings necessitate the development of specific asthma management strategies for overweight and obese patients.