Table 2.

Multivariable Cox proportional hazards models predicting receipt of cardiac rehabilitation after CABG in HD patients younger than 65 yr and in HD patients 65 yr and oldera

Risk FactorPatients Aged <65 Yrb(n = 1855)Patients Aged 65 Yr and Older(n = 4353)
Hazard Ratio (95% CI)P ValueHazard Ratio (95% CI)P Value
Male gender1.10 (0.74 to 1.38)0.972.04 (1.62 to 2.58)<0.0001
Race (referent = white)
    Asian0.73 (0.34 to 1.58)0.430.54 (0.24 to 1.21)0.13
    black0.71 (0.49 to 1.03)0.070.50 (0.34 to 0.72)0.0002
    Native American1.82 (0.89 to 3.72)0.100.64 (0.16 to 2.59)0.53
    other0.42 (0.06 to 3.02)0.390.41 (0.06 to 2.94)0.38
Medicaid coverage at HD start0.59 (0.42 to 0.85)0.0040.49 (0.33 to 0.73)0.0005
No. of cardiovascular conditions at HD start0.91 (0.79 to 1.05)0.210.95 (0.88 to 1.02)0.13
Hemoglobin0.98 (0.90 to 1.07)0.701.01 (0.95 to 1.07)0.81
Serum albumin1.08 (0.87 to 1.36)0.481.16 (0.99 to 1.36)0.07
Diabetic ESRD0.89 (0.66 to 1.19)0.410.82 (0.67 to 1.00)0.05
AMI before CABG0.80 (0.58 to 1.09)0.150.88 (0.72 to 1.07)0.20
COPD0.70 (0.32 to 1.50)0.360.89 (0.63 to 1.24)0.49
Nonambulatory0.27 (0.04 to 1.93)0.190.35 (0.14 to 0.85)0.02
Vintage1.00 (0.99 to 1.01)0.831.01 (1.00 to 1.01)0.26
Started HD in hospital-based facility1.25 (0.92 to 1.70)0.151.16 (0.95 to 1.42)0.14
  • a CI, confidence interval.

  • b Restricted to patients who underwent coronary bypass >90 d after start of ESRD treatment.