Table 3.

Six Clusters Formed Using All Available Demographic and Clinical Variables in the Registry

	Cluster 1	Cluster 2	Cluster 3	Cluster 4	Cluster 5	Cluster 6
No.	328	124	34	552	123	62
Age, y	69.6	74.3	62.4	67.0	68.7	72.3
Female sex, %	0.3	3.3	17.2	6.0	7.9	10.7
Diameter, mm	28.8	29.2	29.7	28.9	32.3	34.0
Runoff vessels	2.2	2.1	2.4	2.2	2.4	2.1
Any complication (surgical cases), %	15.6	15.5	15.6	13.1	40.5	24.0
Endovascular treatment, %	13.4	7.3	0.0	11.8	5.7	14.5
Vein graft (surgical cases), %	71.9	68.2	87.5	76.4	67.6	72.0
Emergency, %	5.2	10.5	14.7	7.2	82.1	19.4
Coronary heart disease, %	37.2	54.0	0.0	33.9	34.1	45.2
Smoking, %	15.2	32.3	2.9	19.4	19.5	16.1
Thrombosed PAA, %	6.7	7.3	11.8	10.7	37.4	19.4
Concomitant AAA, %	89.0	40.3	0.0	0.5	23.6	32.3
Chronic kidney disease, %	0.0	99.2	0.0	0.0	13.8	12.9
Malignant disease, %	0.0	0.0	0.0	0.0	0.0	100

AAA indicates abdominal aortic aneurysm; and PAA, popliteal artery aneurysm.