Table 1.

Count of patients by type of hospital volume and distance from patient to nearest High Volume Hospital

	Number and proportion of TKR patients					Median Travel distance (miles) (TKR patients discharged from LVH where no nearer high-volume hospital)
	All TKR patients (000) *	TKR patients discharged from LVH†		…where no nearer high-volume hospital		To LVH of service	To nearest high volume hospital‡	Additional distance
US	183.2	17,484	9.5%	11,550	66.1%	4.2	23.6	14.3
Urban Area	98.3	6,843	7.0%	3,313	48.4%	2.7	7.5	3.8
Urban Cluster	26.7	3,867	14.5%	3,219	83.2%	1.9	29.3	24.4
Rural	58.2	6,774	11.6%	5,018	74.1%	10.9	31.1	17.8
STATE
FL	13.1	1,062	8.1%	571	53.8%	3.7	12.9	7.8
TX	12.3	1,476	12.0%	964	65.3%	5.3	27.9	15.9
CA	10.0	1,855	18.5%	1,045	56.3%	5.4	7.5	1.1
PA	9.7	722	7.5%	435	60.2%	3.0	15.7	8.8
OH	9.1	578	6.3%	359	62.1%	4.1	15.9	8.9
MI	8.5	489	5.8%	326	66.7%	4.4	19.3	11.2
IL	8.4	566	6.7%	247	43.6%	3.0	20.8	13.8
NY	8.2	804	9.8%	524	65.2%	3.7	16.8	8.2
AZ	3.0	291	9.7%	161	55.3%	3.3	42.2	38.3
CO	2.1	201	9.7%	167	83.1%	4.1	46.3	33.6
Other large TKR states§	69.8	6755	9.7%	4,701	69.6%	7.9	22.5	8.7
MT	1.0	128	12.9%	128	89.1%	2.8	65.5	60.9
ND	1.0	82	8.5%	82	54.9%	20.8	98.7	88.7
SD	1.2	73	6.3%	36	49.4%	6.3	50.3	44.9
NV	0.9	162	17.7%	162	77.2%	2.4	51.0	44.0
NM	0.6	35	5.6%	13	37.1%	6.3	84.2	64.8
WY	0.4	90	24.5%	63	70.0%	1.8	104.6	76.2
Other small TKR states**	24.0	2,115	8.8%	1,653	78.1%	7.6	21.5	11.5

^*States sorted by number of TKR performed.

^†States where proportion of LVH discharges was > 10% emboldened and proportion of patients that did not drive-by a high volume hospital > 70% emboldened.

^‡States where nearest high volume hospital median travel distance or the median additional travel distance is greater than 50 miles is emboldened.

^§Other large TKR states: IN, MO, GA, VA, TN, MN, IA, MD, WA, AL, NJ, SC, MA, KS, KY, LA, OK, AR, NE, MS

^**Other small TKR states: CT, UT, OR, WV, NC, WI, ME, ID, NH, DE, RI, VT, DC