Table 1.

Baseline characteristics of the study population at the time of ESRD onset.

	Entire study population (n=619,151)	Non-diabetic population (n=252,789)	Diabetic population (n=366,362)	P
Age at ESRD onset	60.2(13.7)	57.9(15.9)	61.8(11.7)	<0.001
Age categories (yr)
18–40	9.5	15.7	5.2	<0.001
41–65	47.6	43.6	50.4
66–79	42.9	40.7	44.4
Race/ethnicity
White	62.3	61	63.2	<0.001
African American	31.3	33.3	29.8
Native American	1.3	0.6	1.8
Asian	3.9	3.8	3.9
Other	1.2	1.2	1.2
Sex
Male	54.9	58.3	52.5	<0.001
Female	45.1	41.7	47.5
Body mass index (kg/m2)	28.3(7.3)	26.4(6.7)	29.4(7.4)	<0.001
Co-morbidity index	5.9(2.0)	5.1(2.1)	6.4(1.8)	<0.001
Donor type
Cadaveric	4.8	7.1	3.2	<0.001
Living	3.6	5.9	2.0
Missing (i.e. Patients not transplanted)	91.6	87	94.8
Hemoglobin categories (g/dl)
≤ 10	48.5	48.2	48.7	<0.001
> 10	42.7	42.7	42.7
Missing	8.8	9.1	8.6
GFR categories (ml/min/1.73m2)
< 15	86.5	90.0	84.2	<0.001
15 to 30	11.8	8.2	14.3
Missing	1.7	1.8	1.5
Albumin Categories (g/dl)
< 3.5	49.4	44	53.2	<0.001
≥ 3.5	25.1	30.7	25.6
Missing	25.5	25.3	21.2
Duration of Pre-ESRD nephrology care
No nephrology care	9.3	10.4	8.5	<0.001
Less than 6 months	3.2	3.0	3.4
6 to 12 months	7.8	6.6	8.6
More than 12 months	7.3	6.8	7.5
Missing	72.4	73.1	72.0
Geography
Rural	19.3	18.1	20.2	<0.001
Urban	78.3	79.9	77.1
Unknown	2.4	2.0	2.7
Median income (US $ per annum)	39914.1 (16680)	40591.35 (17317.85)	39445.35 (16207.34)	<0.001

Continuous variables presented as mean (standard deviations) and categorical variables presented as percent of total. ESRD- End Stage Renal Disease.