Asthma Control and Its Relationship with Obstructive Sleep Apnea (OSA) in Older Adults

Table 2

Distribution of asthma severity step and severe asthma (step 3 or 4) among older and younger asthma subjects.

	Older (𝑛=154)	Younger (𝑛=659)	P value
	number (%)	number (%)
Asthma step
1	64 (42%)	312 (47%)	0.08
2	14 (9%)	90 (14%)
3	44 (29%)	138 (21%)
4	32 (21%)	119 (18%)
Severe asthma	76 (49%)	257 (39%)	0.02