Table 1.

Descriptive statistics for publicly funded FHCS patients 2009–2014

	Total hip arthroplasty								Total knee arthroplasty
	Private for-profit		Private non-profit		Public		Private for-profit		Private non-profit		Public
Number of hospitals	5		6		40		5		6		37
Number of patients	422		7871		29 604		488		5847		19 467
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
30-day readmission rate	0.038	0.191	0.049	0.217	0.080	0.272	0.053	0.225	0.053	0.225	0.085	0.279
Share of men	0.360	0.481	0.310	0.463	0.357	0.479	0.480	0.500	0.344	0.475	0.394	0.489
Age (average years)	66.071	10.186	68.638	10.552	68.268	11.209	65.451	9.152	68.133	9.473	68.022	9.734
LOSPY (average number of days)*	0.481	1.931	0.944	3.621	1.375	5.301	0.607	2.289	1.021	3.797	1.322	4.526
Number of comorbidities	0.097	0.381	0.212	0.569	0.233	0.630	0.100	0.406	0.208	0.549	0.235	0.614
CCI (average score)†	0.116	0.434	0.217	0.718	0.263	0.798	0.115	0.543	0.212	0.663	0.265	0.763
Distance to closest PUB (average kilometres)	24.282	29.186	17.980	27.749	33.634	44.650	28.482	38.214	18.744	29.351	34.766	46.175
Distance to closest PNP (average kilometres)	93.036	218.871	65.096	204.742	345.343	447.294	157.228	392.503	83.185	254.448	378.062	480.400
Distance to closest PFP (average kilometres)	97.320	229.045	125.409	246.765	427.123	430.707	164.873	401.589	146.843	286.431	457.198	459.316

*Sum of inpatient days at any hospital within 365 days prior to the date of the surgical procedure.

†Registered from recorded main diagnosis or secondary diagnoses at any hospital stay within 365 days prior to the date of the procedure.

CCI, Charlson Comorbidity Index; FHCS, free hospital choice system; LOSPY, length of hospital stay in the previous year; PFP, private for-profit hospital; PNP, private non-profit hospital; PUB, public hospital.