Table 3.

Hospital-level variation in total hip replacement scores in year 2008 and 2009

		2008						2009
			Indicator scores on hospital level			Denominators on hospital level			Indicator scores on hospital level			Denominators on hospital level
		Nb	mean	IQR	min-max	median	IQR	Nb	mean	IQR	mix-max	mean	IQR
qia1	preoperative patient information	68	1	1–1	1–1	/	/	97	1	1–1	0–1	/	/
qi2a	guideline thrombosis prophylaxis	68	1	1–1	1–1	/	/	68	1	1–1	1–1	/	/
qi2b	thrombosis prophylaxis	64	100	100–100	95–100	245	49–745	95	100	100–100	93–100	226	56–647
qi3a	complication register	68	1	1–1	0–1	/	/	97	1	1–1	0–1	/	/
qi3b	appointment within 6 weeks	68	1	1–1	1–1	/	/	97	1	1–1	0–1	/	/
qi3c	orthopaedic register form	68	1	1–1	0–1	/	/	97	1	1–1	0–1	/	/
qi3d	complication meeting	63	11	4–12	0–52	/	/	96	11	4–12	0–260	/	/
qi3e	improvement plan	65	1	1–1	0–1	/	/	96	1	1–1	0–1	/	/
qi4a	blood management guideline	68	1	1–1	1–1	/	/	68	1	1–1	1–1	/	/
qi4b	transfusion of homologous blood	52	91	94–100	0–100	241	49–745	90	91	88–100	11–100	222	56–647
5a	guideline for antibiotic prophylaxis	68	1	1–1	1–1	/	/	68	1	1–1	1–1	/	/
5b	perioperative antibiotics	65	100	100–100	100–100	245	49–745	65	100	100–100	100–100	226	56–647
qi5c	antibiotics 60–15 min	59	97	100–100	0–100	237	49–745	94	98	100–100	66–100	226	56–647
qi5d	wound infections	60	1	0–1	0–3	245	49–745	93	0	0–0	0–0	213	52–647
qi6	countrywide implementation	68	1	1–1	0–1	/	/	97	1	1–1	0–1	/	/
	average	64	X	X	X			95	X	X	X

^aQuality indicator (qi)

^bNumber of hospitals that delivered the indicator score