Characteristics of Primary Respondents and Secondary Respondents
| Characteristic | Primary Respondents (n=244) | Secondary Respondents (n=89) | P Value |
|---|---|---|---|
| ACQ = Asthma Control Questionnaire.14,16 | |||
| Note: Values are % (No.) unless indicated otherwise. | |||
| * Calculated with χ2 test. | |||
| † Calculated with 1-way analysis of variance test. | |||
| ‡ Patients who visited their family physician for respiratory complaints, including visits for asthma exacerbations. | |||
| § In the 2 years preceding ACQ mailing. Calculated with Mann-Whitney U test. | |||
| ¶ At least 1 prescription for a bronchodilator or an inhaled steroid in the 2 years preceding the ACQ mailing. | |||
| # At least 1 exacerbation for which prednisolone or antibiotics were prescribed. | |||
| Female | 65.2 (159) | 55.1 (49) | .09* |
| Age, mean (SD), years | 34.6 (7.3) | 34.6 (8.1) | .94† |
| Visitors‡ | 50.4 (123) | 40.4 (36) | .11* |
| Consultations,§ mean (SD), No. | 1.3 (2.1) | 0.8 (1.2) | .03|| |
| Use of any asthma medication¶ | 83.2 (203) | 69.7 (62) | .007* |
| Asthma exacerbation# | 13.9 (34) | 10.1 (9) | .46* |
| ACQ sum score, mean (SD) | 5.3 (5.3) | 4.8 (5.2) | .49|| |