Is it time to rebalance the case mix? A portfolio analysis of direct catheterization laboratory costs over a 5-year period

Plehn, Gunnar; Butz, Thomas; Maagh, Petra; Oernek, Ahmet; Meissner, Axel; Plehn, Natalie

doi:10.1186/s40001-016-0238-5

Table 1 Cardiac procedure groups: economic data and their development

From: Is it time to rebalance the case mix? A portfolio analysis of direct catheterization laboratory costs over a 5-year period

Procedural group	Year	n	CBM/h	CBM ratio	CBM/c	ET	ME	DHS
Coronary angiography	2007	821	4974 ± 4203	0.78 ± 0.20	1923 ± 1151	0.53 ± 0.34	227 ± 236	6.1 ± 5.6
	2008	836	5456 ± 5330	0.79 ± 0.15	1932 ± 1566	0.50 ± 0.41	210 ± 165	6.7 ± 6.3
	2009	963	5600 ± 4187	0.79 ± 0.17	1806 ± 1011	0.45 ± 0.36	218 ± 185	5.3 ± 4.6
	2010	1010	6303 ± 6116	0.79 ± 0.21	2042 ± 1608	0.46 ± 0.39	213 ± 172	5.9 ± 6.5
	2011	1002	6592 ± 5571	0.81 ± 0.19	2082 ± 1288	0.46 ± 0.41	204 ± 180	5.6 ± 5.4
	F test/p		14.7/<0.001	4.0/<0.001	6.4/<0.001	6.7/<0.001	1.9/ns	7.5/<0.001
	Post hoc 2007–2011/p		<0.001	0.002	ns	<0.001	ns	ns
Coronary intervention	2007	392	3409 ± 2953	0.68 ±0 .20	2469 ± 1859	0.96 ± 0.50	624 ± 522	6.1 ± 6.3
	2008	410	2826 ± 2526	0.62 ± 0.19	1988 ± 1137	0.97 ± 0.52	715 ± 409	5.7 ± 4.7
	2009	481	3232 ± 2785	0.60 ± 0.18	2059 ± 1341	0.84 ± 0.41	873 ± 486	5.0 ± 4.9
	2010	472	3376 ± 3213	0.60 ± 0.19	2141 ± 1854	0.83 ± 0.51	926 ± 527	5.1 ± 4.9
	2011	432	4444 ± 5617	0.65 ± 0.19	2565 ± 2341	0.79 ± 0.47	820 ± 531	5.3 ± 5.1
	F test/p		11.8/<0.001	14.3/<0.001	9.1/<0.001	11.7/<0.001	25.5/<0.001	3.5/0.007
	Post hoc 2007–2011/p		<0.001	ns	ns	<0.001	<0.001	ns
Electrophysiologic ablation	2007	56	1205 ± 2199	0.35 ± 0.22	2143 ± 1736	2.7 ± 1.1	2289 ± 949	7.3 ± 6.4
	2008	55	1625 ± 2610	0.39 ± 0.26	2169 ± 1653	2.3 ± 1.0	1978 ± 794	7.2 ± 4.5
	2009	50	1580 ± 3340	0.39 ± 0.21	2289 ± 1792	2.1 ± 0.83	2303 ± 999	5.9 ± 3.6
	2010	61	1461 ± 2192	0.37 ± 0.28	2176 ± 2079	2.2 ± 0.92	2223 ± 1237	6.1 ± 5.6
	2011	55	1623 ± 3999	0.36 ± 0.21	1708 ± 1057	1.8 ± 0.84	2423 ± 1331	6.4 ± 4.8
	F test/p		0.20/ns	0.26/ns	0.94/ns	6.6/<0.001	1.3/ns	0.78/ns
	Post hoc 2007–2011/p		ns	ns	ns	<0.001	ns	ns
Overall	2007	1288	4325 ± 3937	0.73 ± 0.22	2108 ± 1464	0.77 ± 0.65	444 ± 591	6.2 ± 5.9
	2008	1345	4490 ± 4727	0.72 ± 0.21	1998 ± 1491	0.73 ± 0.64	455 ± 507	6.5 ± 5.8
	2009	1534	4708 ± 3950	0.72 ± 0.20	1921 ± 1190	0.64 ± 0.53	495 ± 582	5.3 ± 4.7
	2010	1596	5219 ± 5512	0.72 ± 0.24	2100 ± 1757	0.65 ± 0.58	516 ± 629	5.8 ± 6.2
	2011	1545	5892 ± 5882	0.75 ± 0.22	2269 ± 1774	0.61 ± 0.56	462 ± 620	5.8 ± 5.9
	F test/p		24.5/<0.001	7.8/<0.001	10.8/<0.001	17.4/<0.001	3.9/0.004	9.5/<0.001
	Post hoc 2007–2011/p		<0.001	0.04	ns	<0.001	ns	ns

CBM contribution margin, CBM/c contribution margin per case, CBM/h contribution margin per hour, DHS duration of hospital stay, ET examination time, ME material expenditure

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