Table 2

Poisson model estimates relating independent variables to amputation counts in the study cohorts

Independent variable	Estimate	Wald 95% confidence limits		p Value
(Intercept)	−1.7973	−2.6318	−0.9629	<0.0001
Age (years)	0.0098	0.0045	0.0151	0.0003
Male sex	0.189	0.0649	0.3132	0.0028
White race	−0.1182	−0.2503	0.0139	0.0795
Hispanic ethnicity	−0.2051	−0.3711	−0.0392	0.0154
Central venous catheter	0.1729	0.0298	0.316	0.0179
Predialysis systolic blood pressure (mm Hg)	−0.0045	−0.0078	−0.0011	0.0092
Albumin (g/dL)	−0.8923	−1.0222	−0.7623	<0.0001
Phosphorus (mg/dL)	0.0508	−0.0045	0.1061	0.0716
Peripheral artery disease	1.0753	0.9454	1.2052	<0.0001
Infection	0.1254	−0.0561	0.3069	0.1758
Hypertension	−0.2773	−0.4089	−0.1458	<0.0001
Myocardial infarction	−0.0133	−0.2783	0.2516	0.9214
Ischemic heart disease	0.2166	0.077	0.3562	0.0024
Cardiac dysrhythmias	−0.059	−0.246	0.128	0.5363
Congestive heart failure	−0.0296	−0.1624	0.1031	0.6616
Foot check implementation	−0.15	−0.2737	−0.0263	0.0175