Laser Doppler blood flowmeter as a useful instrument for the early detection of lower extremity peripheral arterial disease in hemodialysis patients: an observational study

Table 3 Multivariate logistic regression (stepwise method) for PAD using SAS®

Multivariate logistic regression (SPP)
Covariate	p	Odds ratio	Lower limit	Upper limit
SPP-Dorsal Area	0.0244	0.97	0.94	1.00
Cr	0.0095	0.72	0.56	0.92
CRP	0.0325	2.62	1.18	6.94
Tcho	0.0103	0.97	0.94	0.99
Multivariate logistic regression (laser Doppler)
Covariate	p	Odds ratio	Lower limit	Upper limit
LDF-Plantar-Qb	0.026	0.94	0.87	0.99
Cr	0.0008	0.65	0.49	0.82
CRP	0.0221	3.08	1.27	8.74
Tcho	0.0176	0.97	0.94	0.99

Skin perfusion pressure (SPP) and laser Doppler (LD) confounded each other; therefore, divided regression was performed.
PAD peripheral arterial disease, D dorsal area of the foot, P plantar area of the foot, Cr creatinine, CRP C-reactive protein, Tcho total choline

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