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. Author manuscript; available in PMC: 2013 Aug 28.
Published in final edited form as: Clin Transplant. 2012 May-Jun;26(3):E307–E315. doi: 10.1111/j.1399-0012.2012.01661.x

Table 2.

The association of diabetic status in ESRD patients with getting listed/transplanted in the entire study population by Cox models1,2

Outcome: listed/transplanted without being listed Outcome: Transplant for those who got listed

HAZARD RATIO (95% CI) HAZARD RATIO (95% CI)
MODEL 1 MODEL 2 MODEL 1 MODEL 2
Diabetes (compared to non- diabetes) 0.80(0.79–0.81) 1.07(1.05–1.09) 0.72(0.70–0.73) 1.01(0.99–1.03)*

Age at ESRD onset 0.95(0.95–0.95) 0.98(0.98–0.98) 0.95(0.95–0.95) 0.98(0.98–0.98)

Sex
 Male Reference Reference
 Female 0.83(0.82–0.84) 0.83(0.82–0.84) 0.84(0.82–0.85) 0.84(0.83–0.86)

Race
 White Reference Reference
 Black 0.77(0.76–0.78) 0.75(0.74–0.76) 0.50(0.49–0.51) 0.50(0.49–0.51)
Native American 0.82(0.77–0.87) 0.81(0.77–0.86) 0.60(0.55–0.65) 0.59(0.54–0.64)
Asian 1.29(1.26–1.33) 1.21(1.18–1.24) 0.70(0.67–0.72) 0.63(0.61–0.66)
Other 0.68(0.65–0.72) 0.66(0.63–0.70) 0.46(0.42–0.49) 0.44(0.41–0.47)

Hemoglobin (g/dl)
 ≤ 10 Reference Reference
 > 10 1.15(1.14–1.17) 1.14(1.13–1.16) 1.30(1.28–1.32) 1.29(1.27–1.32)
 Missing 1.02(1.00–1.04)* 1.02(1.00–1.04)* 1.17(1.14–1.21) 1.17(1.13–1.20)

Albumin (g/dl)
 < 3.5 Reference Reference
 ≥ 3.5 1.46(1.44–1.49) 1.41(1.38–1.43) 1.49(1.46–1.53) 1.44(1.41–1.47)
 Missing 1.14(1.13–1.17) 1.11(1.09–1.13) 1.14(1.12–1.17) 1.11(1.09–1.14)

GFR (ml/min/ 1.73m2)
 < 15 Reference Reference
 15 – 30 0.59(0.57–0.61) 0.62(0.61–0.64) 0.50(0.57–0.62) 0.62(0.60–0.65)
 Missing 0.71(0.67–0.75) 0.73(0.70–0.77) 0.68(0.63–0.74) 0.71(0.65–0.76)

Duration of pre-ESRD nephrology care
 No nephrology care Reference Reference
 Less than 6 months 1.82(1.73–1.92) 1.83(1.74–1.92) 2.23(2.03–2.45) 2.22(2.02–2.44)
 6 to 12 months 1.51(1.45–1.57) 1.52(1.46–1.58) 1.92(1.77–2.08) 1.93(1.78–2.08)
 More than 12 months 1.91(1.83–1.99) 1.95(1.87–2.03) 2.96(2.75–3.19) 3.02(2.80–3.25)
 Missing 1.35(1.31–1.40) 1.38(1.34–1.42) 2.03(1.91–2.16) 2.05(1.92–2.18)

Geographic location
Rural Reference Reference
Urban 0.99(0.97–1.01)* 0.97(0.95–0.99)* 0.86(0.84–0.88) 0.84(0.82–0.86)
Unknown 0.82(0.77–0.86) 0.81(0.76–0.85) 0.77(0.71–.0.83) 0.75(0.70–0.81)

Median income (US $ per annum) 1.00(1.00–1.00) 1.00(1.00–1.00) 1.00(1.00–1.00) 1.00(1.00–1.00)

Body mass index (kg/m2) - 1.00(0.99–1.00) - 0.98(0.98–0.99)

Comorbidity index - 0.73(0.73–0.74) - 0.72(0.71–0.73)
1

Cox model 1 was adjusted for age at ESRD onset, sex, race, history of diabetes, hemoglobin, GFR, Serum albumin, geographic location, median income, and duration of pre-ESRD nephrology care.

2

Cox model 2 was adjusted for BMI and Comorbidity index in addition to the covariates listed above in model 1.

*

Note: P value was <0.001 for all the above variables in both the models except i) for diabetes variable for the outcome transplant for those who got listed in the 2nd model (P=0.42), ii) missing category in hemoglobin for the outcome listed/ transplanted without being listed (P=0.12 and 0.18 for model 1 and 2 respectively), and iii) for urban category in geography for the outcome listed/ transplanted without being listed (P=0.22 and 0.002 for model 1 & 2 respectively)