Table 5. The univariate Cox model for death depending on COPD.

Outcome	HR (95% CI)	P value
Death	2.17 (1.34–3.38)	0.86
Stroke/TIA	1.11 (0.26–3.24)	0.002
Myocardial infarction	1.89 (0.63–4.68)	0.23
Re-PTA	0.73 (0.48–1.07)	0.11
Lower extremity bypass	1.30 (0.54–3.10)	0.54
Amputation	1.23 (0.74–1.92)	0.41
PTE/TEA	1.07 (0.06–6.03)	0.94

CI, confidence interval; HR, hazard ratio; PTA, percutaneous transluminal angioplasty; PTE, percutaneous thrombectomy; TEA, thromboendarterectomy; TIA, transient ischemic attack; COPD, chronic obstructive pulmonary disease.