Table 3

Asthma worsening and exacerbation during the past year by asthma control status

ASTHMA WORSENING AND EXACERBATIONPATIENTS WITH UNCONTROLLED ASTHMAPATIENTS WITH CONTROLLED ASTHMAP VALUE
No. of patients with worsening asthma and exacerbations474 (53%)418 (47%)
Asthma worsening
 • Patients who experienced at least 195%82%<.01
 • Mean duration (days)13.68.0<.02
Asthma exacerbation
 • Patients who had at least 1 urgent office visit72%15%<.01
 • Patients who had at least 1 emergency-room visit32%3%<.01
 • Patients who had at least 1 hospitalization7%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.