Table 3. Distribution of frequencies of comorbidities and/or risk factors in 39 patients subjected to angioplasty with stenting of the superficial femoral artery, by presence or absence of fracture of stents implanted.

Variables	Stent fracture				Totals (n = 39)		p-value
	Present (n = 6)		Absent (n = 33)
	n	%	n	%	N	%
Isolated or associated comorbidities and/or risk factors
Systemic arterial hypertension	4	66.7%	22	66.7%	26	66.7%
Diabetes mellitus	2	33.3%	18	54.5%	20	51.5%
Congestive heart failure	-	-	1	3.0%	1	2.6%
Smoking	-	-	7	21.2%	7	17.9%
Dyslipidemia	1	16.7%	4	12.1%	5	12.8%	0.385
Side of lesion
Right	2	33.3%	16	48.5%	18	46.1%
Left	4	66.7%	17	51.5%	21	53.9%	0.257
Location of lesions
Proximal third	-	-	5	15.1%	5	12.9%
Middle third	-	-	4	12.2%	4	10.2%
Distal third	3	50.0%	14	42.4%	17	43.5%
Proximal/middle thirds	1	16.7%	-	-	1	2.6%
Middle/distal thirds	1	16.7%	6	18.1%	7	17.9%
Diffuse	1	16.7%	4	12.2%	5	12.9%	0.324
Rutherford Classification
1-4	-	-	9	27.3%	9	23.1%
5-6	6	100.0%	24	72.7%	30	76.9%	0.047*
TASC II consensus guidelines
A	-	-	6	18.2%	6	15.4%
B	2	33.3%	18	54.5%	20	51.3%
C	1	16.7%	2	6.1%	3	7.7%
D	3	50.0%	7	21.2%	10	25.6%	0.271
Number of stents implanted
1	2	33.3%	25	75.7%	27	69.2%
2-3	4	66.7%	8	24.3%	12	30.8%	0.010*
Length
< 150 mm	2	33.3%	24	72.7%	26	66.7%
> 150 mm	4	66.7%	9	27.3%	13	33.3	0.076
Sonographic findings
Stenosis < 50%	-	-	19	57.6%	1	48.7%
Stenosis > 50%	2	33.3%	6	18.2%	8	20.5%
Occlusion	4	66.7%	8	24.2%	12	30.7%	0.030*

^*Statistically significant values.