title: Suboptimal asthma control: prevalence, detection and consequences in general practice.
abstract: 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.
authors.affiliation: University of Toronto, Canada. kchapman@ca.inter.net
authors.forename: K R
authors.initials: KR
authors.lastname: Chapman
authors.forename: L P
authors.initials: LP
authors.lastname: Boulet
authors.forename: R M
authors.initials: RM
authors.lastname: Rea
authors.forename: E
authors.initials: E
authors.lastname: Franssen
mesh_terms: D000328:Adult; D000368:Aged; D018927:Anti-Asthmatic Agents / Q000627:therapeutic use*; D001249:Asthma / Q000175:diagnosis / Q000188:drug therapy* / Q000453:epidemiology*; D001291:Attitude of Health Personnel; D001993:Bronchodilator Agents / Q000627:therapeutic use*; D016009:Chi-Square Distribution; D016001:Confidence Intervals; D003430:Cross-Sectional Studies; D005194:Family Practice / Q000592:standards* / Q000639:trends; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D009819:Office Visits / Q000706:statistics & numerical data; D009864:Ontario / Q000453:epidemiology; D017060:Patient Satisfaction; D010817:Physician-Patient Relations; D010818:Practice Patterns, Physicians' / Q000706:statistics & numerical data; D015995:Prevalence; D012129:Respiratory Function Tests; D018570:Risk Assessment; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires; D016896:Treatment Outcome
chemical_list: D018927:Anti-Asthmatic Agents; D001993:Bronchodilator Agents