Table 2. Association of clinical characteristics with popliteal lesion.

	Unadjusted odds ratio	Adjusted odds ratio
Old age	1.13 [0.94–1.36] (P= 0.20)	1.10 [0.90–1.34] (P= 0.36)
Female sex	1.69 [1.39–2.05] (P＜0.001)	1.64 [1.34–2.01] (P＜0.001)
Overweight	0.81 [0.64–1.01] (P= 0.064)	0.83 [0.66–1.05] (P= 0.12)
Smoking	0.55 [0.43–0.70] (P＜0.001)	0.66 [0.51–0.85] (P= 0.001)
Hypertension	0.93 [0.72–1.21] (P= 0.60)	0.88 [0.67–1.15] (P= 0.35)
Dyslipidemia	0.80 [0.62–1.03] (P= 0.078)	0.86 [0.66–1.12] (P= 0.27)
Diabetes mellitus	1.14 [0.94–1.39] (P= 0.19)	1.16 [0.94–1.43] (P= 0.17)
Renal failure on dialysis	2.08 [1.69–2.55] (P＜0.001)	2.01 [1.62–2.49] (P＜0.001)

Data are presented as odds ratios [95% confidence intervals] (P values) for the presence of popliteal lesions. Unadjusted odds ratios were derived from the univariate logistic regression model in a variable of interest was entered as the explanatory variable, whereas adjusted odds ratios were derived from the multivariate logistic regression model in which all the variables listed in the table were entered as the explanatory variables.