Table 1

NHI-financed medical costs per patient-year for PD patients

	APD (n=1749)			CAPD (n=1749)			Median difference	p Value
Variables	Mean	Median	SD	Mean	Median	SD	Median difference	p Value
Total medical costs (US$)*	25 498	23 005	10 646	21 879	19 237	16 635	3769	<0.01
Classified by departments
Outpatient department	20 010	20 158	3607	16 918	16 883	7419	3275	<0.01
Emergency department	263	100	524	237	85	470	15	0.14
Inpatient department	5225	1197	10 766	4724	992	12 423	206	0.01
Classified by non-dialysis or dialysis
Non-dialysis-related	6296	2975	9703	5964	2639	16 013	336	<0.01
Outpatient department	1574	1258	1505	1595	1207	6900	51	<0.01
Emergency department	256	99	510	232	84	463	14	0.15
Inpatient department	4466	1007	9338	4137	863	11 210	144	0.03
Dialysis-related (by department)	19 202	19 235	3340	15 914	16 050	2917	3185	<0.01
Outpatient department	18 436	18 579	3344	15 323	15 594	2885	2985	<0.01
Emergency department	7	0	43	4	0	26	0	0.04
Inpatient department	759	91	1720	587	41	1610	51	<0.01
Dialysis-related (by items)	19 202	19 235	3340	15 914	16 050	2917	3185	<0.01
APD set	2391	2913	1089	48	0	213	2913	<0.01
APD machine	813	795	208	16	0	61	795	<0.01
Cost of erythropoietin	1622	1763	654	1618	1736	620	27	0.80
PD-related costs†	3390	3466	416	3407	3470	409	–4	0.02
PD solution	9609	9762	2464	9887	10 107	2178	–346	<0.01
Others	1377	811	1873	938	503	1627	308	<0.01
Dialysis-related (by quantities)
Quantity of PD solution (L)	3653	3700	740	2651	2706	629	994	<0.01
PRBC transfusion (unit)	3.7	0	13.5	3.3	0	8.7	0	0.15
Oral iron supply (mg)	2956	0	10 357	2155	0	8787	0	0.40
Erythropoietin (DDD)‡	145.2	5.1	86.2	145.1	5.2	85.5	0	0.96
Extubation of PD catheter	0.06	0	0.29	0.05	0	0.24	0	0.35
After bootstrap analysis
Total medical costs (US$)*	23 488		783	19 899		173		<0.001
Non-dialysis-related	4723		629	4340		168		<0.001
Dialysis-related	18 859		157	15 768		76		<0.001

*US$1=30 New Taiwan Dollars.
†Costs include: (1) administration, physician and nursing fee; and (2) intubation and extubation cost of peritoneal dialysis catheter.
‡1 DDD=1000 IU epoetin alfa=1000 IU epoetin beta=5 μg darbepoetin alfa=4 μg methoxy polyethylene glycol-epoetin beta.
APD, automated peritoneal dialysis; CAPD, continuous ambulatory peritoneal dialysis; DDD, defined daily dose; NHI, National Health Insurance; PD, peritoneal dialysis; PRBC, packed red blood cell.