Table 3.

Stage 1 Cox proportional hazard model estimates of patient case mix factors on referral for transplantation for data years 2008–2011

ParametersReferent GroupCoefficientSEMHazard Ratio (95% CI)
Age (yr) group
 19–300.340.091.40 (1.18 to 1.66)
 31–400.340.071.40 (1.23 to 1.59)
 51–60−0.220.060.80 (0.72 to 0.89)
 60+41–50−0.750.060.47 (0.42 to 0.53)
Race group
 BlackWhite0.120.051.12 (1.02 to 1.24)
 Other0.220.141.25 (0.95 to 1.65)
MenWomen0.130.041.14 (1.05 to 1.24)
Incident ESRD year
 2008−0.300.060.74 (0.66 to 0.84)
 2009−0.180.060.84 (0.75 to 0.94)
 20102011−0.050.060.95 (0.85 to 1.07)
BMI≥35 kg/m2−0.060.050.94 (0.86 to 1.04)
BMI unknownBMI<35 kg/m2−0.510.150.60 (0.45 to 0.81)
Comorbidities
 Congestive heart failureNone−0.160.050.85 (0.77 to 0.94)
 Congestive heart failure unknownNone−0.920.600.40 (0.12 to 1.30)
 Atherosclerotic heart diseaseNone0.000.091.00 (0.85 to 1.18)
 Other cardiac diseaseNone−0.140.070.87 (0.76 to 1.00)
 Cerebrovascular diseaseNone−0.270.090.77 (0.64 to 0.91)
 Peripheral vascular diseaseNone−0.240.090.79 (0.66 to 0.95)
 COPDNone−0.280.110.76 (0.61 to 0.94)
 HypertensionNone0.230.071. 25 (1.09 to 1.44)
 DiabetesNone−0.020.040.98 (0.90 to 1.07)
 Tobacco useNone−0.210.080.81 (0.70 to 0.95)
 CancerNone−0.710.140.49 (0.37 to 0.64)
 Nursing home statusNone−2.140.320.12 (0.06 to 0.22)
  • 95% CI, 95% confidence interval; BMI, body mass index; COPD, chronic obstructive pulmonary disease.