Table 2.

Insomnia Severity Index Comparisons According to Level of Asthma Control

	Asthma Control
	Well-Controlled (n=67)	Partially Controlled (n=55)	Uncontrolled (n=78)	P value
Total ISI score, median (IQR)	2 (6)	9 (10)	12 (9)	<0.001
Insomnia, ISI ≥10	13 (19%)	27 (49%)	53 (68%)	<0.001
Insomnia severity
No insomnia (ISI = 0–7)	52 (78%)	23 (42%)	15 (19%)	<0.001
Sub-threshold insomnia (ISI = 8–14)	7 (10%)	18 (33%)	30 (38%)
Moderate insomnia (ISI = 15–21)	7 (10%)	10 (18%)	24 (31%)
Severe insomnia (ISI = 22–28)	1 (2%)	4 (7%)	9 (12%)

Abbreviations: IQR, interquartile range; ISI, Insomnia Severity Index.