Table 1.

Patient characteristics

	Total (N = 45,441)		Inpatients (N = 1571)		Outpatients (N = 43,870)
	N	%	N	%	N	%
Sex
Male	40,846	89.9	1500	95.5	39,346	89.7
Female	4595	10.1	71	4.5	4524	10.3
Age, years
65–69	31,853	70.1	924	58.8	30,929	70.5
70–74	13,588	29.9	647	41.2	12,941	29.5
Number of claims issued in the most recent month
1	32,084	70.6	1404	89.4	30,680	69.9
2 or more	13,357	29.4	167	10.6	13,190	30.1
Year of enrollment in a health insurance union
2000 or earlier	9282	20.4	337	21.5	8945	20.4
2001–2005	11,245	24.7	500	31.8	10,745	24.5
2006–2010	14,984	33.0	485	30.9	14,499	33.0
2011–2015	9930	21.9	249	15.8	9681	22.1
Enrollment period, months (median)	89		115		101
Union enrollment status
Continued enrollment	31,603	69.5	775	49.3	30,828	70.3
Loss of insured status	13,838	30.5	796	50.7	13,042	29.7
Reason for loss of insured status
Retirement	6723	14.8	176	11.2	6547	14.9
Relocation	104	0.2	2	0.1	102	0.2
Unpaid insurance fees	1130	2.5	12	0.8	1118	2.5
Other	5313	11.7	133	8.5	5180	11.8
Death	568	1.2	473	30.1	95	0.2