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Table 7 Percentage of facility patients with 30-day cumulative fluid-related weight gains above varied thresholds after institution of an UF rate threshold of 13 mL/h/kg overall and by subgroup (February 2012)a

From: Target weight achievement and ultrafiltration rate thresholds: potential patient implications

Group % of facility patients with a 30-day cumulative fluid-related weight gain
≥ + 2 kg ≥ + 3 kg ≥ + 4 kg
Overall 17.4 ± 10.8;
16.0 [9.5, 24.1]
13.3 ± 9.6;
11.6 [6.5, 18.8]
10.6 ± 8.5;
9.1 [4.4, 15.6]
Sex
 Female 18.6 ± 14.7;
16.7 [7.9, 27.3]
14.5 ± 13.4;
12.5 [3.3, 22.2]
11.5 ± 11.8;
9.5 [0.0, 18.2]
 Male 16.5 ± 12.9;
14.3 [7.1, 24.0]
12.5 ± 11.5;
10.8 [3.4, 19.0]
9.9 ± 10.3;
7.7 [0.0, 15.4]
Race
 Black 15.1 ± 18.4;
11.1 [0.0, 22.5]
11.1 ± 16.5;
6.3 [0.0, 16.7]
8.7 ± 14.9;
3.2 [0.0, 12.5]
 Non-black 19.4 ± 15.3;
17.1 [9.1, 27.3]
15.2 ± 13.8;
13.0 [5.3, 22.2]
12.2 ± 12.4;
10.0 [1.9, 18.2]
Ethnicity
 Hispanic 24.6 ± 28.7;
17.2 [0.0, 34.7]
19.8 ± 26.5;
11.6 [0.0, 28.6]
16.2 ± 24.4;
6.7 [0.0, 23.1]
 Non-Hispanic 16.6 ± 11.2;
15.2 [8.8, 23.1]
12.5 ± 10.0;
10.7 [5.6, 18.2]
9.9 ± 9.0;
8.0 [3.4, 14.7]
Heart Failure
 (−) Heart failure 16.5 ± 11.9;
15.4 [7.7, 23.5]
12.5 ± 10.6;
10.7 [5.0, 18.2]
9.8 ± 9.6;
8.0 [1.8, 14.5]
 (+) Heart failure 20.3 ± 20.3;
16.7 [0.0, 31.0]
15.9 ± 18.7;
11.1 [0.0, 25.0]
12.9 ± 17.1;
7.7 [0.0, 20.0]
Prescribed TT
  < 240 min 19.6 ± 12.8;
18.8 [10.3, 27.8]
15.1 ± 11.4;
13.3 [7.1, 22.1]
12.2 ± 10.2;
11.1 [4.5, 18.2]
  ≥ 240 min 10.7 ± 15.6;
5.7 [0.0, 16.7]
7.3 ± 13.3;
0.0 [0.0, 11.1]
5.2 ± 11.4;
0.0 [0.0, 6.7]
IDWG
  < 2 kg 6.0 ± 10.6;
0.0 [0.0, 10.0]
3.9 ± 8.3;
0.0 [0.0, 5.7]
2.8 ± 6.9;
0.0 [0.0, 0.0]
  ≥ 2 kg 22.3 ± 13.9;
21.1 [12.5, 30.8]
17.3 ± 12.6;
15.4 [8.3, 25.0]
13.8 ± 11.2;
12.0 [5.6, 20.0]
  < 3 kg 10.1 ± 9.8;
8.1 [2.4, 15.0]
7.2 ± 8.1;
5.3 [0.0, 11.1]
5.5 ± 7.2;
3.4 [0.0, 8.3]
  ≥ 3 kg 28.7 ± 19.5;
26.9 [15.4, 40.0]
22.6 ± 18.2;
20.0 [10.0, 33.3]
18.3 ± 16.5;
16.7 [6.3, 26.9]
  < 4 kg 13.5 ± 10.0;
12.0 [6.3, 19.0]
10.1 ± 8.7;
8.3 [3.7, 14.3]
7.9 ± 7.6;
6.3 [0.0, 11.8]
  ≥ 4 kg 36.7 ± 28.1;
33.3 [16.7, 50.0]
29.0 ± 27.0;
25.0 [0.0, 44.4]
23.8 ± 25.5;
20.0 [0.0, 35.7]
Prescribed UF rate
  < 13 mL/h/kg 7.3 ± 6.8;
6.3 [2.1, 10.5]
4.7 ± 5.6;
3.6 [0.0, 7.1]
3.3 ± 4.9;
0.0 [0.0, 5.1]
  ≥ 13 mL/h/kg 53.4 ± 26.7;
50.0 [35.7, 68.8]
43.8 ± 27.2;
42.9 [25.0, 59.4]
36.3 ± 26.7;
33.3 [18.2, 50.0]
  1. aEstimation of weight gains were based on the February 2012 fluid-related weight gain calculation cohort (patient N = 59,953 and facility N = 1752). Values presented as means ± SDs; medians [quartile 1, quartile 3]
  2. Abbreviations: IDWG Interdialytic weight gain, TT Treatment time, UF Ultrafiltration