TABLE 1.

Baseline Demographics

	Commercially Insured Patients (n = 353,530)	Medicaid Patients (n = 378,051)	Medicare Patients with Supplemental Insurance (n = 69,176)
Age, years
Mean (SD)	40 (16)	44 (19)	76 (9)
12-18, n (%)	40,713 (11.5)	38,594 (10.2)	0
19-64, n (%)	308,690 (87.3)	288,804 (76.4)	2,525 (3.7)
≥ 65, n (%)	4,127 (1.2)	50,653 (13.4)	66,651 (96.3)
Female, n (%)	195,470 (55.3)	212,346 (56.2)	37,179 (53.7)
Region of residence, n (%)
South	149,444 (42.3)	NA	20,698 (29.9)
North central	73,260 (20.7)	NA	22,260 (32.2)
Northeast	71,798 (20.3)	NA	16,076 (23.2)
West	53,583 (15.2)	NA	9,330 (13.5)
Unknown	5,445 (1.5)	NA	812 (1.2)
Missing	0	378,051 (100.0)	0

NA = not available.