Table 2.

Average weights, interdialytic weight gain, percentage reaching dry weight, and ultrafiltration rate

StartEndP Value
Run-In Period
 Weight, kg79.1 (71.8 to 86.5)79.3 (71.8 to 86.8)0.60
 Interdialytic weight gain, kg1.7 (1.5 to 1.9)2 (1.8 to 2.2)0.36
 Ultrafiltration rate, ml/kg per h7.4 (6.4 to 8.5)6.0 (5.0 to 7.0)0.06
 B-type natriuretic peptide, ng/L5916 (2941 to 8891)6441 (4803 to 10,081)0.76
 High-sensitivity cardiac troponin, ng/L84 (63 to 105)74 (57 to 91)0.46
 Recovery time, h8.3 (4.9 to 11.7)9.3 (5.8 to 12.8)0.66
Biofeedback Period
 Weight, kg79.5 (72.9 to 86.0)80.2 (73.4 to 86.9)0.16
 Interdialytic weight gain, kg1.7 (1.4 to 2.1)1.9 (1.6 to 2.1)0.83
 Ultrafiltration rate, ml/kg per h7.3 (6.0 to 8.6)5.9 (4.1 to 7.7)0.17
 B-type natriuretic peptide, ng/L6719 (3284 to 10,154)7793 (2803 to 12,783)0.72
 High-sensitivity cardiac troponin, ng/L79 (57 to 101)73 (55 to 91)0.62
 Recovery time, h7.4 (4.3 to 10.5)9.1 (4.3 to 13.9)0.54
Control Period
 Weight, kg81.1 (74.0 to 88.3)81.4 (74.2 to 88.6)0.29
 Interdialytic weight gain, kg1.9 (1.6 to 2.2)1.9 (1.8 to 2.0)0.94
 Ultrafiltration rate, ml/kg per h7.0 (5.5 to 8.6)4.8 (3.1 to 6.5)0.05
 B-type natriuretic peptide, ng/L7505 (2095 to 12,915)6333 (2210 to 10,455)0.73
 High-sensitivity cardiac troponin, ng/L69 (52 to 86)70 (46 to 93)0.97
 Recovery time, h9.5 (5.3 to 13.7)8.7 (4.2 to 13.1)0.78
Mean Difference (Biofeedback Minus Control)
 Weight, kg1.6 (0.3 to 2.9)1.2 (−0.1 to 2.5)0.56
 Interdialytic weight gain, kg0.1 (−0.3 to 0.4)0.0 (−0.2 to 0.4)0.32
 Ultrafiltration rate, ml/kg per h−0.3 (−1.6 to 1.0)−1.1 (−2.4 to 0.2)0.48
 B-type natriuretic peptide, ng/L787 (−5622 to 7195)−1460 (−7604 to 4683)0.49
 High-sensitivity cardiac troponin, ng/L−9 (−25 to 28)−3 (−27 to 29)0.65
 Recovery time, h2.1 (−0.2 to 3.4)−0.4 (−0.7 to 3.1)0.39
  • Values are expressed as mean (95% confidence interval) unless otherwise indicated.