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Table 2 Hemodialysis sessions’ features and biochemical variables – country results (n = 294)

From: Impact of variables on recovery time in patients undergoing hemodialysis: an international survey

Variables

Turkey (n = 187)

Portugal (n = 107)

P value

Transport from home to dialysis center

  

< 0.001

 Own car

29 (15.5)

3 (2.8)

 Dialysis unit service vehicle

150 (80.2)

-

 Public transportation

3 (1.6)

-

 Ambulance

5 (2.7)

104 (97.2)

Commuting time from home to dialysis center (minutes)

21.50 [29.50–14.50 = 15.0]

17.77 [25.83–10.33 = 15.5]

0.002

Waiting time upon arrival at the dialysis center (minutes)

6.25 [7.41–4.75 = 2.66]

13.66 [25.83–7.91 = 17.92]

< 0.001

Dialysate sodium concentration (mEq/L)

140 [140–140 = 0]

138 [140 − 138 = 2]

< 0.001

Dialysate bicarbonate concentration (mmol/L)

3 [3–3 = 0]

36 [36 − 32 = 4]

< 0.001

Blood flow rate (mL/min)

300 [350 − 300 = 50]

350 [400 − 307 = 93]

< 0.001

UFR (ml/h/kg)

10.37 ± 3.23

8.58 ± 2.84

< 0.001

IDWG (kg)

2.64 ± 0.94

2.06 ± 0.72

< 0.001

Hgb (g/dl)

11.01 ± 1.61

10.81 ± 1.01

0.178

Kt/V

1.73 ± 0.25

1.74 ± 0.33

0.798

Phosphor (mg/dl)

4.8 [5.9–3.9 = 2.0]

4.9 [5.7–3.9 = 1.8]

0.786

CRP (mg/dl)

7.2 [20.1–3.9 = 016.2]

1 [1.4–0.8 = 0.6]

< 0.001

Sodium (mEq/l)

137 [139 − 134 = 5]

138 [141 − 136 = 5]

< 0.001

HTC (%)

36 [40-32.1 = 7.9]

32.9 [35.3–31.2 = 4.1]

< 0.001

PTH (pg/dl)

283 [543 − 146 = 397]

375 [638.3–271 = 367.3]

< 0.003

WBC (103/µl)

3.64 [4.07–3.23 = 0.84]

5.87 [7.03–4.9 = 2.13]

< 0.001

Albumin (g/dl)

3.82 [4.04–3.6 = 0.44]

4.10 [4.3–3.8 = 0.5]

< 0.001

Predialysis Creatinine (mg/dl)

6.72 [8.17–5.51 = 2.66]

7.8 [9.2–6.5 = 2.7]

< 0.001

Postdialysis Creatinine (mg/dl)

2.30 [2.91–1.75 = 1.16]

2.3 [2.7–1.8 = 0.9]

0.873

Bicarbonate (mEg/l)

22 [25 − 20 = 5]

20.7 [22.1–19.3 = 2.8]

< 0.001

Calcium (mg/dl)

8.8 [9.3–8.4 = 0.9]

8.8 [9.4–8.4 = 1.0]

0.539

Predialysis Urea (mg/dl)

113.18 ± 32.17

114.04 ± 35.48

0.832

Postdialysis Urea (mg/dl)

29 [38 − 22 = 16]

25 [35 − 20 = 15]

0.031

Hospital Depression Scale

  

0.088

 The depression risk is low (0–7)

120 (60.3)

79 (39.7)

 The depression risk is high (8–21)

67 (70.5)

28 (29.5)

Hospital Anxiety Score

  

0.124

 The anxiety risk is low (0–10)

134 (60.9)

86 (39.1)

 The anxiety risk is high (11–21)

53 (71.6)

21 (28.4)

  1. Descriptive measures displayed: n (%), mean ± standard deviation or median [IQR]. UFR: Ultrafiltration rate; IDWG: Interdialytic weight gain; Hgb: Haemoglobin; CRP: C-Reactive protein; HTC: Hematocrit; PTH: Parathyroid hormone; WBC: White blood cell count