Relationship between increased airway responsiveness and asthma severity in the childhood asthma management program

Scott T. Weiss, Mark L Van Natta, Robert S. Zeiger

Research output: Contribution to journalArticle

Abstract

The relationship between increased airway responsiveness and asthma severity in children is unclear. The Childhood Asthma Management Program (CAMP) with 1,041 children with mild to moderate asthma offers an opportunity to relate the concentration of methacholine that causes a 20% fall in FEV1 (PC20) to level of lung function, occurrence of respiratory symptoms, duration of disease, and assessment of severity by clinical staff. Decreasing PC20 was found to be associated with lower levels of lung function (prebronchodilator percent predicted FEV1: r = 0.29, β = 3.5, p <0.001), the occurrence of chronic asthma symptoms, persistent wheezing (odds ratio [OR] = 1.66, p <0.001), subjective clinical staff assessment of asthma severity (p <0.001), and longer duration of asthma (r = -0.11, β = -0.20, p <0.002). These data provide evidence that the degree of airway responsiveness is linked to disease severity in children with mild to moderate asthma.

Original languageEnglish (US)
Pages (from-to)50-56
Number of pages7
JournalAmerican Journal of Respiratory and Critical Care Medicine
Volume162
Issue number1
StatePublished - 2000

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Asthma
Lung
Methacholine Chloride
Respiratory Sounds
Odds Ratio

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

Cite this

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