Table 4.

Proportion of Subjects with Sleep Apnea in Each Disease Category Versus Proportion in Sample Without Disease

Disease	Total sample, no.	Sample with sleep apnea, no. (%)		p Valuea
		Disease absent	Disease present
COPD	13	62 (77)	11 (85)	0.73
CHF	18	55 (72)	18 (100)	0.01
COPD-CHF	6	68 (77)	5 (83)	1.00
Hypercapnea	10	67 (80)	6 (60)	0.22
ILD	8	69 (80)	4 (50)	0.07
HIV	2	72 (78)	1 (50)	0.40
PE	2	71 (77)	2 (100)	1.00
Pulmonary HTN	8	66 (77)	7 (88)	0.68
Miscellaneous	27	54 (81)	19 (70)	0.29

COPD refers to chronic obstructive pulmonary disease; CHF, congestive heart failure; ILD, interstitial lung disease; PE, pulmonary embolism; HTN, hypertension.

^aFisher exact test