Skin Perfusion Pressure Is a Prognostic Factor in Hemodialysis Patients

Table 3

Independent risk factors for lower limb survival and overall survival by Cox regression analysis. SPP < 70, presence of CVD, DM, and smoking showed significantly increase the risk for lower limb survival (hazard ratios increased 4.722, 3.407, 4.050, 3.225 times, resp.), and age ≥ 71.4, SPP < 70, presence of DM, and smoking showed significantly increase the risk for overall survival (hazard ratios increased 1.121, 1.209, 1.028, 4.521 times, resp.). (*HR: hazard ratio; **CI: confidence interval).

Lower limb survival	𝑃 value	HR*	95%CI**
SPP, ≥ 70 versus < 70	0.007	4.722	1.539	14.490
CVD, without versus with	0.027	3.407	1.146	10.124
DM, without versus with	0.035	4.050	1.102	14.876
Smoking, without versus with	0.029	3.225	1.126	9.233
Overall survival	𝑃 value	HR	95%CI
Age, <71.4 versus ≥71.4	0.001	1.073	1.121	1.028
SPP, ≥70 versus <70	0.014	2.519	1.209	5.250
DM, without versus with	0.042	2.239	1.028	4.875
Smoking, without versus with	0.000	9.135	4.521	18.460