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  • Title: Asthma control in a random sample of New Zealand adolescent asthmatics.
    Author: van Dalen CJ, Harding E, Parkin J, Blakey K, Cheng S, Pearce NE, Douwes J.
    Journal: J Asthma; 2007 May; 44(4):261-6. PubMed ID: 17530523.
    Abstract:
    Asthma control, defined by asthma symptoms and lung function, and asthma medication use, was assessed in 123 adolescent asthmatics. Sputum eosinophilia (>or= 2.5% eosinophils) and bronchial hyperresponsiveness (BHR) to hypertonic saline were also measured to assess whether these additional objective parameters might aid in determining asthma control; 54.5% of subjects had adequately controlled asthma; 50.4% of all subjects reported inhaled corticosteroid use in the preceding 12 months; however, only 22.3% reported regular use. Although BHR and median eosinophil numbers were significantly higher in the inadequately controlled asthmatics, BHR and sputum eosinophilia had poor sensitivity for detecting inadequate asthma control.
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