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Copyright ©ERS Journals Ltd 2008
Suboptimal asthma control: prevalence, detection and consequences in general practice
1 University of Toronto, Toronto, 2 Laval University, Quebec City, Quebec, and 3 GlaxoSmithKline Canada Inc., Mississauga, Ontario, Canada.
CORRESPONDENCE: K. R. Chapman, Asthma and Airway Centre, University Health Network, Toronto Western Hospital, Room 7E-451, 399 Bathurst Street, Toronto, Ontario, M5T 2S8, Canada. Fax: 1 4166033456. E-mail: kchapman{at}ca.inter.net
Keywords: Guideline dissemination, healthcare utilisation
Received: August 3, 2007
Accepted October 11, 2007
Telephone surveys describing suboptimal asthma control may be biased by low response rates.
In order to obtain an unbiased assessment of asthma control and assess its impact in primary care, primary care physicians used a 1-page control questionnaire in 50 consecutive asthma patients.
Of the 10,428 patients assessed by 354 physicians, 59% were uncontrolled, 19% well-controlled and 23% totally controlled. Physicians overestimated control, regarding only 42% of patients as uncontrolled. Physicians were more likely to report plans to alter the regimens of uncontrolled patients than controlled patients (1.29 versus 0.20 medication changes per patient) doing so in a fashion consistent with guideline recommendations. Of the uncontrolled patients, 59% required one or more urgent care or specialist visits versus 26 and 15% of well-controlled or totally controlled patients, respectively. Patients were more likely to report short-term symptom control when they had not required urgent or specialist care (odds ratio 5.68; 95% confidence interval 4.91–6.58).
The majority of asthma patients treated in general practice are uncontrolled. Lack of control can be recognised by physicians who are likely to consider appropriate changes to therapy. A lack of short-term symptom control of asthma is associated with excess healthcare utilisation.
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