TABLE 1.

The Reality of Asthma Control (TRAC) study: Asthma worsenings and exacerbations during the past year by asthma control status

Asthma worsening and exacerbation	Patients with uncontrolled asthma	Patients with controlled asthma	P
Patients with worsening asthma and exacerbations, n (%)	474 (53)	418 (47)
Asthma worsening
Patients who experienced at least one, %	95	82	<0.01
Mean duration, days	13.6	8	<0.02
Asthma exacerbation
Patients who had at least one urgent office visit, %	72	15	<0.01
Patients who had at least one emergency-room visit, %	32	3	<0.01
Patients who had at least one hospitalization, %	7	0	<0.01

*Number of patients adds to 1 less than the total of 893 patients; 1 patient could not be classified because of “don’t know” responses or “no” answers to questions on asthma control. Reproduced with permission from reference 17. © The College of Family Physicians of Canada