Table 7: Relationship between ultrafiltration volume and participants' characteristics.
Variables |
UFV < 2L N = 922 (%) Mean ± SD |
UFV > 2L N = 766 (%) Mean ± SD |
OR |
95% CI |
P-value |
Sex Males Females Age, years < 65 > 65 Dialysis sessions/week < 3 3 Erythropoietin 4000 IU < 3/week 3/week BMI, kg/m2 < 25.0 > 25.0 Predialysis BP, mmHg Systolic BP < 140 Systolic BP > 140 Diastolic BP < 90 Diastolic BP > 90 Predialysis haematocrit, % < 33.0 > 33.0 Predialysis albumin, mg/L < 35 > 35 Predialysis creatinine, umol/L < 500 > 500 Predialysis bicarbonate, mmol/L < 22 > 22 Dialysis duration, hours < 4 4 Dialyzer surface area, m2 1.3/1.4 1.7/1.8 Blood flow rate, ml/min < 350 > 350 Kt/V < 1.2 > 1.2 URR, % < 65 > 65 |
515 (45.8) 407 (72.2)
692 (50.3) 230 (74.0)
553 (42.5) 369 (95.3)
632 (47.4) 290 (81.9)
521 (65.9) 401 (44.7)
251 (75.6) 671 (49.5) 307 (93.0) 615 (45.3)
769 (51.9) 153 (74.6)
720 (53.5) 202 (69.6)
715 (73.3) 207 (29.1)
723 (49.5) 199 (87.3)
16 (29.6) 906 (54.8)
18 (75.0) 904 (54.3)
551 (72.3) 371 (40.1)
864 (61.4) 58 (20.7)
886 (63.2) 36 (12.5) |
609 (54.2) 157 (27.8)
685 (49.7) 81 (26.0)
748 (57.5) 18 (4.7)
702 (52.6) 64 (18.1)
270 (34.1) 496 (55.3)
81 (24.4) 685 (50.5) 23 (7.0) 743 (54.7)
714 (48.1) 52 (25.4)
733 (46.5) 33 (30.4)
261 (26.7) 505 (70.9)
737 (50.5) 29 (12.7)
38 (70.4) 728 (45.2)
6 (25.0) 760 (45.7)
211 (27.7) 555 (59.9)
544 (38.6) 222 (79.3)
515 (36.8) 251 (87.5) |
2.04
3.99
4.60
4.02
2.18
1.96
3.08
3.61
4.22
4.93
5.72
4.97
3.01
3.94
5.11
5.4
|
1.13-3.19
1.67-6.50
3.88-10.24
1.73-7.64
1.46-5.89
1.17-3.05
2.07-6.45
3.44-7.19
2.94-8.95
1.94-9.26
4.05-13.23
2.73-11.02
1.46-5.83
3.34-6.78
2.60-9.93
1.88-9.82
|
0.05
0.002
< 0.001
0.001
0.04
0.005
0.004
0.002
< 0.001
< 0.001
< 0.001
< 0.001
0.03
0.002
< 0.001
< 0.001
|
UFV: Ultrafiltration; OR: Odd Ratio; CI: Confidence Interval; BMI: Body Mass Index; BP: Blood Pressure; URR: Urea Reduction Ratio.