Table 1.
Characteristics of Patients
| Age, y | 59.2 (15.0) |
| Women | 228 (37.8%) |
| Race | |
| Asian | 73 (12.1%) |
| Black/ African American | 152 (25.2%) |
| Other | 51 (8.4%) |
| White | 165 (27.3%) |
| White-Hispanic | 100 (16.6%) |
| Unknown | 63 (10.4%) |
| Weight, kg | 78.7 (22.7) |
| Height, cm | 168.5 (11.4) |
| Body mass index, kg/m2 | 27.6 (7.0) |
| BSA, m2 | 1.9 (0.3) |
| Intradialytic weight gain, kg | 2.4 (1.3) |
| Diabetes mellitus; yes | 288 (47.7%) |
| Vintage, d | 153 (179) [median, 61; IQR, 30-213] |
| Serum creatinine, mg/dL | 6.8 (2.8) |
| Pre-HD serum urea, mg/dL | 56.7 (19.6) |
| Urine volume, mL | 943 (611) |
| Phosphorus, mg/dL | 5.3 (1.6) |
| KRU, mL/min | 3.6 (2.6) |
| KRU ≥ 2.5 mL/min | 354 (58.6%) |
| KRU with BSA adjustment,a mL/min | 1.9 (1.4) |
Note: n = 604; Values for categorical variables are given as number (percent); values for continuous variables are given as mean (standard deviation) unless otherwise noted. Two missing observations in phosphorus and 1 missing observation in height and variables using height.
Abbreviations: BSA, body surface area; HD, hemodialysis; IQR, interquartile range; KRU, kidney urea clearance.
a
KRU/BSA, where BSA = 0.007184 × (weight in kg)0.425 × (height in cm)0.725.