Table 3.

Linear regression predicting initial hemoglobin concentration (n = 12,002)

Variables	Linear Regression
	Estimates	P
Age	0.005	0.034
BMI	−0.001	0.527
Estimated GFR	0.046	<0.001
Race
white	Reference
African American	−0.348	<0.001
Gender
male	Reference
female	−0.011	0.702
Access type
AV fistula	Reference
graft	−0.256	0.003
catheter	−0.519	<0.001
other	−0.721	<0.001
Comorbid conditions
congestive heart failure	−0.073	0.019
ASHD	0.065	0.051
CVA/TIA	0.051	0.232
other cardiac	0.081	0.020
peripheral vascular disease	0.004	0.923
diabetes	−0.060	0.044
COPD	−0.044	0.302
hypertension	0.058	0.138
smoker	−0.002	0.985
cancer	−0.074	0.115
addiction or drug dependence	−0.196	0.195
inability to ambulate or transfer	−0.128	0.023
amputation	−0.155	0.106
institutionalized	−0.005	0.917
needs assistance with daily activities	−0.098	0.035