Table 1.
Baseline characteristics
| Variable | Daily Trial | Nocturnal Trial | ||||
|---|---|---|---|---|---|---|
| Conventional (n=120) | Daily (n=125) | All (n=245) | Conventional (n=42) | Nocturnal (n=45) | All (n=87) | |
| Age (yr) | 52.0±14.1 | 48.9±13.6 | 50.4±13.9 | 54.0±12.9 | 51.7±14.4 | 52.8±13.6 |
| Male sex | 73 (60.8) | 78 (62.4) | 151 (61.6) | 28 (66.7) | 29 (64.4) | 57 (65.5) |
| Race/ethnicity | ||||||
| Black | 53 (44.2) | 49 (39.2) | 102 (41.6) | 11 (26.2) | 12 (26.7) | 23(26.4) |
| White | 46 (38.3) | 43 (34.4) | 89 (36.3) | 21 (50.0) | 27 (60.0) | 48 (55.2) |
| Native American, aboriginal Canadian, Alaska Native, First Nation | 4 (3.3) | 4 (3.2) | 8 (3.3) | 2 (4.8) | 1 (2.2) | 3 (3.4) |
| Asian | 5 (4.2) | 11 (8.8) | 16 (6.5) | 7 (16.7) | 5 (11.1) | 12 (13.8) |
| Native Hawaiian/other Pacific Islander | 3 (2.5) | 1 (0.8) | 4 (1.6) | 0 (0) | 0 (0) | 0 (0) |
| Other/mixed/unknown | 9 (7.5) | 17 (13.6) | 26 (10.5) | 1 (2.4) | 0 (0) | 1 (1.2) |
| Hispanic/Latino | 31 (26) | 38 (30) | 69 (28.2) | 0 (0) | 0 (0) | 0 (0) |
| ESRD vintage | ||||||
| <2 yr | 35 (29.2) | 37 (29.6) | 72 (29.4) | 30 (71.4) | 28 (62.2) | 58 (66.7) |
| 2–5 yr | 42 (35.0) | 34 (27.2) | 76 (31.0) | 5 (11.9) | 8 (17.8) | 13 (14.9) |
| >5 yr | 43 (35.8) | 54 (43.2) | 97 (39.6) | 7 (16.7) | 9 (20.0) | 16 (18.4) |
| Comorbid conditions | ||||||
| Diabetes | 50 (41.7) | 50 (40.0) | 100 (40.8) | 18 (42.9) | 19 (42.2) | 37 (42.5) |
| Congestive heart failure | 24 (20) | 25 (20) | 49 (20.0) | 7 (16.7) | 5 (11.1) | 12 (13.8) |
| Laboratory values | ||||||
| Albumin (g/dl) | 3.94±0.46 | 3.94±0.37 | 3.94±0.42 | 3.92±0.51 | 3.90±0.48 | 3.91±0.49 |
| Hemoglobin (g/dl) | 12.0±1.2 | 11.9±1.3 | 11.9±1.3 | 11.9±1.1 | 11.6±1.1 | 11.8±1.1 |
| Vascular access used at randomization | ||||||
| Arteriovenous fistula | 71 (59) | 82 (66) | 153 (63) | 17 (40) | 22 (49) | 39 (45) |
| Arteriovenous graft | 23 (19) | 22 (18) | 45 (18) | 4 (10) | 3 (7) | 7 (8) |
| Tunneled catheter | 26 (22) | 21 (17) | 47 (19) | 21 (50) | 20 (44) | 41 (47) |
| Buttonhole technique used (n) | — | — | — | 14 | 19 | 33 |
Unless otherwise indicated, values are expressed as number of patients (percentage). Values expressed with a plus/minus sign are the mean ± SD.