Table 1.

Demographic and clinical characteristics of the study cohort.

Characteristic			Patients (n=343,681), n (%)
Age
	18 to <40 years	120,422 (35.04)
	40 to 65 years	149,418 (43.48)
	>65 years	73,841 (21.49)
Gender
	Male	159,964 (46.54)
	Female	183,701 (53.45)
	Unknown or not reported	16 (<.01)
Race
	Black or African American	25,513 (7.42)
	American Indian or Alaska native	4795 (1.40)
	Asian	34,474 (10.03)
	Native Hawaiian or other Pacific islander	2843 (0.83)
	Multiple races	1 (<0.01)
	Unknown or not reported	45,094 (13.12)
	White	230,961 (67.20)
Ethnicity
	Non-Hispanic	271,582 (79.02)
	Hispanic	21,718 (6.32)
	Unknown or not reported	50,381 (14.66)
Insurance
	Private	163,908 (47.69)
	Public (Medicare and Medicaid)	160,026 (46.56)
	Self-paid or charity	19,747 (5.75)
Disease
	Asthma	14,644 (4.26)
	Chronic kidney disease	25,363 (7.38)
	Chronic obstructive pulmonary disease	7579 (2.21)
	Type 2 diabetes	56,551 (16.45)
	Type 1 diabetes	2879 (0.84)