Table 3.

Characteristics of the US dialysis population (USRDS data) and baseline characteristics of the CHOICE cohorta

Characteristic1997 USRDS Incident Dialysis Patients(n = 79,102)CHOICE Participants(n = 833)
Median age (years [IQR])6159.2 (46.3, 68.9)
Female gender (n [%])47391 (46.9)
Race (n [%])
    white65534 (64.1)
    black29255 (30.6)
    other644 (5.3)
Dialysis modality (n [%])
    HD87675 (81.0)
    PD13158 (19.0)
ESRD cause (n [%])
    diabetes42392 (47.1)
    HTN25146 (17.5)
    GN9130 (15.6)
    other2344 (19.8)
Baseline CVD (n [%])352 (42.3)
Diabetes (n [%])453 (54.4)
Median Lp(a) (nmol/L [IQR])
    all52.5 (16.2 to 121.9)
    whites36.3 (10.6 to 106.0)
    blacks86.9 (46.9 to 148.1)
Median apo(a) size (K-IV repeats [IQR])
    all24 (19 to 28)
    whites25 (19 to 29)
    blacks23 (20 to 27)
Median time from first dialysis to enrollment (mo [IQR])1.6 (0.9 to 2.5)
Median time from first dialysis to Lp(a) determination (mo [IQR])4.4 (3.7 to 5.1)
Median follow-up (mo [range])33.8 (0 to 63.9)
  • a USRDS, US Renal Data System; CHOICE, Choices for Healthy Outcomes in Caring for ESRD; IQR, interquartile range; HD, hemodialysis; PD, peritoneal dialysis; HTN, hypertension; GN, glomerulonephritis; CVD, cardiovascular disease; K-IV, Kringle-IV.