Variables | Mean (± SD), median (IQR), frequency (%) |
---|---|
Demographic factors | |
 Age, years | 54.6 (± 13.3) |
 Sex | |
  Male | 206 (62.4) |
  Female | 124 (37.6) |
 Ethnicity | |
  Non-African American | 87 (26.4) |
  African American | 243 (73.6) |
Physical information | |
 Body mass index, kg/m2 | 27.8 (23.5, 33.3) |
 Non-dialysis study visit systolic, mmHg | 137.8 (± 25.3) |
 Non-dialysis study visit diastolic, mmHg | 75.0 (± 14.7) |
 Non-dialysis study visit pulse pressure, mmHg | 62.8 (± 18.1) |
Comorbidities | |
 Hypertension | 330 (100.0) |
 Hypercholesterolemia | 228 (69.1) |
 Diabetes | 187 (56.7) |
 Coronary artery disease | 116 (35.2) |
 Charlson comorbidity index | 5 (4, 6) |
Medications | |
 Total number of antihypertensive medications | 2.7 (± 1.3) |
 Beta-blocker | 207 (69.5) |
 RAASa blockade | 127 (42.6) |
 Calcium channel blockers | 183 (61.4) |
 Alpha blockers | 32 (10.7) |
 Vasodilators | 102 (34.2) |
 Diuretic | 68 (22.8) |
 Cinacalcet | 15 (5.0) |
 QT prolonging medicationb | 118 (35.8) |
Cardiac parameters | |
 Left ventricular mass index, g/m2.7 | 61.3 (50.1, 80.4) |
 Left ventricular ejection fraction, % | 65.5 (± 11.9) |
Laboratory measurements | |
 3-month average hemoglobin, g/dl | 10.8 (± 1.2) |
 pH | 7.34 (± 0.04) |
Laboratory measurements | |
 Total calciumc, mg/dl | 8.8 (± 0.6) |
 Corrected calciumc, mg/dl | 9.0 (± 0.6) |
 Ionized calciumd, mmol/l | 1.15 (± 0.07) |
 Total potassiumc, mEq/l | 4.4 (± 0.6) |
 Magnesiumd, mEq/l | 1.76 (± 0.24) |
Dialysate measurements | |
 Calciumc, mEq/l | |
  2 | 139 (42.1) |
  2.25 | 14 (4.2) |
  2.5 | 174 (52.7) |
  3 | 3 (0.9) |
 Potassiumc, mEq/l | |
  1 | 5 (1.5) |
  2 | 278 (84.2) |
  3 | 47 (14.2) |
Serum-dialysate measurements | |
 Total calciumc, mEq/l | 2.1 (± 0.4) |
 Corrected calciumc, mEq/l | 2.2 (± 0.4) |
ECG measurements | |
 QT intervald, ms | 436.0 (± 55.6) |
 Corrected QT intervald, ms | 455.4 (± 46.0) |
 QT prolongationd | 155 (47.0) |