Table 1.

Classification of asthma control adopted from the National Asthma Education and Prevention Program Expert Panel Report 3 Guidelines

	Controlled	Uncontrolled
Asthma symptomsa	≤8 days	>8 days
Nighttime awakeningsb	≤2 days	>2 days
Interference with activityc	Not at all or a little	Moderate amount or a lot
Rescue medicationd	≤2 times per week	>2 times per week

^aSymptoms were determined based on the response to the question “During the past 30 days, on how many days did you have any symptoms of asthma?”

^bNighttime awakenings were determined based on the response to the question “During the past 30 days, on how many days did symptoms of asthma make it difficult for you to stay asleep?”

^cInterference with activity was determined based on the response to the question “During the past 12 months, would you say you limited your usual activities due to asthma not at all, a little, a moderate amount, or a lot?

^dFrequency of rescue medication was determined based on the response to the question “How many times per day or per week do you use a [short-acting β2-agonist or anti-cholinergic]?”