Selected patient demographics of study group
| Characteristics | Native Kidney Failure (n=509,643) | Failed Transplant (n=16,728) | P Value |
|---|---|---|---|
| Mean age, yr (SD) | 62.8 (15.7) | 36.3 (14.9) | <0.001 |
| Sex, % women | 43.3 | 39.6 | <0.001 |
| Race, % | <0.01 | ||
| White | 66.1 | 66.9 | |
| Black | 28.5 | 28.2 | |
| Other | 5.4 | 4.9 | |
| Mean BMI, kg/m2 | 29.1 (7.8) | 27.0 (7.0) | <0.001 |
| Comorbidities, % | |||
| PVD | 14.7 | 9.5 | <0.001 |
| Diabetes | 54.3 | 39.5 | <0.001 |
| Hypertension | 85.7 | 87.6 | <0.001 |
| Coronary heart disease | 34.6 | 23.0 | <0.001 |
| Congestive heart failure | 33.6 | 18.7 | <0.001 |
| Other variables, % | |||
| Institutionalized | 7.9 | 2.8 | <0.001 |
| Current smoker | 6.6 | 4.8 | <0.001 |
| Employed | 10.6 | 23.9 | <0.001 |
| Nephrology referral | |||
| None | 36.3 | 6.5 | |
| <6 mo | 13.6 | 13.1 | <0.001 |
| 6–12 mo | 23.1 | 11.6 | |
| >12 mo | 26.9 | 68.8 | |
| Access type used, % | |||
| Arteriovenous fistula | 15.5 | 27.7 | <0.001 |
| Arteriovenous graft | 3.6 | 6.9 | |
| Central venous catheter | 80.8 | 65.4 | |
| Access type in place, % | |||
| Arteriovenous fistula | 32.5 | 40.0 | <0.001 |
| Arteriovenous graft | 5.4 | 8.6 | |
| Neither | 62.1 | 51.4 |
Summary statistics represent percentages unless otherwise stated. BMI, body mass index; PVD, peripheral vascular disease.