Table 1.

Patient characteristics by time period of initiation

Year of InitiationP Value
2000–2004 (n=826)2005–2009 (n=865)
Age (SD), yr62.0 (11.4)63.5 (11.1)0.003
Nonwhite race, %47.340.40.004
Women, %1.32.00.31
Diabetes, %56.566.5<0.001
Ischemic heart disease, %29.931.60.46
Congestive heart failure, %29.532.80.14
Peripheral arterial disease, %6.45.80.59
Stroke, %4.55.30.43
Chronic obstructive pulmonary disease, %15.016.30.47
Median risk score (25th, 75th percentiles)2.0 (1.3, 2.9)2.3 (1.5, 3.2)<0.001
Died within 1 yr of initiation, %17.115.40.35
Mean eGFR at initiation (SD), ml/min per 1.73 m29.8 (5.8)11.0 (5.5)<0.001
Median interval between most recent eGFR and initiation (25th, 75th percentiles), d2 (1, 6)1 (1, 7)0.71
Median eGFR slope (25th, 75th percentiles),a ml/min per 1.73 m2 per yr−13.7 (−7.4, −21.6)−14.1 (−7.8, 24.2)0.07
Inpatient initiation, %74.974.60.86
Access used at initiation
 Peritoneal dialysis catheter, %5.34.30.002
 Hemodialysis fistula, %16.321.9
 Hemodialysis graft, %4.62.3
 Hemodialysis catheter, %73.771.6
Median outpatient VA nephrology visitsa (interquartile range)3 (0–6)3 (1–6)0.11
  • a During the year before initiation.