Table 1

Demographic characteristics of the patients

		Disease
Characteristic		Cirrhosis	CHF	COPD	Total
Age (years)
≤18	n	2922	10 784	53 409	70 495
	%	1.73	1.41	3.71	2.83
19–39	n	17 437	42 473	89 022	179 214
	%	10.31	5.54	6.19	7.18
40–59	n	101 596	235 725	588 456	1 006 691
	%	60.05	30.74	40.90	40.35
≥60	n	47 226	477 858	707 911	1 238 761
	%	27.91	62.32	49.20	49.65
Sex
Male	n	94 546	395 130	663 076	1 218 848
	%	55.88	51.53	46.09	48.85
Female	n	74 635	371 710	775 722	1 276 313
	%	44.12	48.47	53.91	51.15
Geographic region
Northeast	n	32 302	162 386	298 722	518 891
	%	19.09	21.18	20.76	20.80
North Central	n	35 596	208 474	401 632	661 723
	%	21.04	27.19	27.91	26.52
South	n	65 703	269 322	521 118	905 957
	%	38.84	35.12	36.22	36.31
West	n	31 235	113 227	186 374	356 996
	%	18.46	14.77	12.95	14.31
Unknown	n	4345	13 431	30 952	51 594
	%	2.57	1.75	2.15	2.07
Total	n	169 181	766 840	1 438 798	2 495 161
	%	100	100	100	100

CHF, congestive heart failure;COPD, chronic obstructive pulmonary disease.