Table 2.

Association between undiagnosed OSA and hospitalization among Medicare beneficiaries ≥ 65 years of age with cardiovascular disease over 12 months before OSA diagnosis (n = 142,893).

	Risk Ratio (95% Confidence Interval)
	Unadjusted	Stabilized IPTW	Stabilized IPTW Plus Diabetes
No OSA	Reference	Reference	Reference
Undiagnosed OSA	2.13 (2.09, 2.17)	1.86 (1.83, 1.90)	1.85 (1.82, 1.89)

IPTW = inverse probability of treatment weighted, OSA = obstructive sleep apnea.