Table 3. Cox regression analysis for prediction of newly-onset PAOD in subgroup of male and female.

Variable	HR	Lower 95% CI	Upper 95% CI	p value
Group of male
Group 1 (score = 0)	1	-	-	-
Group 2 (score 1-2)	5.23	5.00	5.46	< 0.001
Group 3 (score 3-4)	9.55	9.06	10.06	< 0.001
Group 4 (score 5-6)	12.64	11.77	13.57	< 0.001
Group 5 (score 7-8)	16.01	13.60	18.85	< 0.001
Group 6 (score 9)	-		-	-
Group of female
Group 2 (score 1-2)	1	-	-	-
Group 3 (score 3-4)	4.55	4.37	4.73	< 0.001
Group 4 (score 5-6)	6.79	6.44	7.17	< 0.001
Group 5 (score 7-8)	8.58	7.85	9.39	< 0.001
Group 6 (score 9)	11.42	8.15	15.99	< 0.001

CI, confidence interval; HR, hazard ratio; PAOD, peripheral arterial occlusive disease.