Table 1.

Patient and encounter characteristics, by PAD severity

	PAD Severity
	Claudication		Rest Pain		Tissue Lossa
	N	%	N	%	N	%	P-valueb	P-valuec	P-valued
All	1970	100.00	534	100.00	1183	100.00	--	--	--
Age, mean (SD)	67.0	(10.2)	68.1	(10.8)	71.2	(11.7)	<.0001	<.0001	.02
21–59	471	23.91	119	22.28	210	17.75
60–69	672	34.11	178	33.33	311	26.29
70–79	599	30.41	149	27.90	330	27.90
80 or older	228	11.57	88	16.48	332	28.06
Race							.72	<.0001	.0002
White	1609	81.68	393	73.60	860	72.70
Black	256	12.99	104	19.48	248	20.96
Other/unknown	105	5.33	37	6.93	75	6.34
Gender							.21	.004	.0005
Female	729	37.01	242	45.32	498	42.10
Male	1241	62.99	292	54.68	685	57.90
Marital status							.09	<.0001	.08
Married, life partner	915	46.45	224	41.95	516	43.62
Divorced, separated	240	12.18	73	13.67	117	9.89
Single, widowed	594	30.15	186	34.83	448	37.87
Unknown	221	11.22	51	9.55	102	8.62
Hospital bed size							.002	.10	.06
<200	528	26.80	157	29.40	290	24.51
200–299	335	17.01	67	12.55	205	17.33
300–499	397	20.15	102	19.10	279	23.58
500 or more	710	36.04	208	38.95	409	34.57
Procedure type							<.0001	<.0001	<.0001
Endovascular	1272	64.57	232	43.45	679	57.40
Open	698	35.43	302	56.55	504	42.60
Length of stay, mean (SD)	2.27	(4.09)	4.10	(4.68)	6.39	(7.63)	<.0001	<.0001	<.0001
< 10 days	1927	97.82	499	93.45	940	79.46
> 10 days	43	2.18	35	6.55	243	20.54

SD = Standard deviation.

^aTissue loss = gangrene or ulcer

^bP-value based on chi-square (or t-test for continuous) comparison between PAD tissue loss (gangrene/ulcer) and rest pain.

^cP-value based on chi-square (or t-test for continuous) comparison between PAD tissue loss (gangrene/ulcer) and claudication.

^dP-value based on chi-square (or t-test for continuous) comparison between PAD rest pain and claudication..