Table 2.

Characteristics of 6-month survivors versus nonsurvivors at time of eventa

CharacteristicNonsurvivors (n = 649)Survivors (n = 80)P
Male gender (n [%])353 (54.4)31 (38.8)0.008
Age (yr [SD])67.8 (13.3)63.2 (13.6)0.005
Ethnicity (n [%])0.57
    black247 (38.1)32 (40)
    white298 (45.9)38 (47.5)
    Hispanic51 (7.9)7 (8.8)
    other53 (8.2)3 (3.8)
Comorbidities
    diabetes274 (42.3)34 (42.5)0.98
    cardiac disease (CHF/CAD)102 (15.7)15 (18.7)0.49
    hypertension303 (46.8)37 (46.3)0.92
Documented cause of kidney disease (n [%])0.96
    diabetes262 (40.4)32 (40.0)
    glomerulonephritis33 (5.1)5 (6.3)
    hypertension160 (24.7)19 (23.8)
    polycystic kidney disease14 (2.2)0 (0)
    other/unknown180 (27.8)24 (30.0)
Years on dialysis (median [IQR])2.3 (0.8 to 4.7)4.1 (2 to 5.8)<0.0001
Dialysis dosage before event (mean [SD])
    urea reduction ratio0.7 (0.1)0.7 (0.1)0.78
Dialysis access (n [%])
    catheter231 (39.6)11 (18.3)0.001
Day of week (n [%])0.15
    first hemodialysis day (Monday/Tuesday)228 (35.1)33 (41.3)
    second hemodialysis day (Wednesday/Thursday)216 (33.3)17 (21.3)
    third hemodialysis day (Friday/Saturday)189 (29.1)27 (33.8)
Dialysate [K] (n [%])0.03
    ≤1 mEq/L130 (18.9)19 (25.3)
    2 mEq/L439 (63.8)36 (48.0)
    ≥3 mEq/L119 (17.3)20 (26.7)
Dialysate [Ca] (n [%])
    ≤2 mEq/L98 (14.2)18 (24.0)0.03
Prescribed dry weight (kg [SD])73.3 (20)71.5 (20)0.47
Prescribed medications (n [%])
    ACE inhibitor or ARB238 (39.1)56 (72.7)<0.0001
    BBL256 (42.0)57 (74.0)<0.0001
    statin175 (28.7)32 (41.6)0.02
    aspirin213 (35.0)41 (53.2)0.002
    CCB197 (32.3)45 (58.4)<0.0001
    other antiarrhythmic161 (26.4)33 (42.9)0.003
    dialysis multivitamin355 (58.1)51 (66.2)0.2
Last measured laboratory values before event (mean [SD])
    albumin (mg/dl)3.5 (0.5)3.6 (0.5)0.04
    creatinine (mg/dl)7.1 (2.9)7.2 (2.5)0.85
    potassium (mEq/L)4.7 (0.9)4.7 (0.9)0.90
    calcium (corrected; mg/dl)9.6 (0.9)9.4 (0.9)0.07
    phosphorus (mg/dl)5.3 (1.9)5.3 (1.4)0.78
    calcium × phosphorus48.8 (17.5)47.8 (14.0)0.60
    hemoglobin (g/dl)11.2 (1.5)11.3 (1.5)0.85
    intact 7-84 PTH (pg/ml; median [IQR])222 (111 to 390)233.0 (117 to 550)0.20
  • a CAD, coronary artery disease; CHF, congestive heart failure.