Table 1.

Baseline characteristics of participants

VariableNo. of Participants with DataMean (SD), Median (IQR), or n (%)
Sociodemographic
 Age, yr811063.1 (15.0)
  ≤603059 (37.7)
  >605051 (62.3)
 Men81104691 (57.8)
 Country8110
  Portugal1777 (21.9)
  Argentina1204 (14.9)
  Turkey1107 (13.7)
  Spain1041 (12.8)
  Romania1000 (12.3)
  Hungary554 (6.8)
  Italy543 (6.7)
  Poland434 (5.4)
  France221 (2.7)
  Germany178 (2.2)
  Sweden51 (0.6)
 Married/life partner60954127 (67.7)
 Secondary education60902699 (44.3)
 Daily physical activity6199934 (15.1)
 Waitlisted for transplant80941496 (18.5)
Clinical characteristics
 Current or former smoker62802068 (32.9)
 Body mass index, kg/m27872
  Underweight (<18.5)365 (4.6)
  Normal range (18.5–24.9)3309 (42.0)
  Preobese (25.0–29.9)2659 (33.8)
  Obese (≥30.0)1539 (19.6)
 Hypertension73206219 (85.0)
 Diabetes72832332 (32.0)
 Angina69651030 (14.8)
 Congestive heart failure72751388 (19.1)
 Myocardial infarction7239838 (11.6)
 Stroke7233634 (8.8)
 Pulmonary disease8110940 (11.6)
 Depression7221757 (10.5)
 Gastrointestinal disease81101763 (21.7)
 Cancer81101045 (12.9)
 Charlson comorbidity score81106 (4–8)
Medications
 Antihypertensive81102471 (39.4)
 Statin62252316 (37.2)
Laboratory variables
 Albumin, g/L616739.8 (3.8)
 Phosphorus, mg/dl78694.7 (1.4)
 Calcium, mg/dl78708.9 (0.7)
 Hemoglobin, g/dl786911.1 (1.3)
Dialysis characteristics
 Arteriovenous fistula80516481 (80.5)
 Time on dialysis, yr81083.6 (1.7–6.8)
 Kt/V urea78181.7 (0.3)
Dietary intake (self-reported servings per day)
 Cereals81082.3 (1.2–3.3)
 Fruits81072.5 (1.4–4.4)
 Vegetables81093.6 (2.2–5.9)
 Legumes and nuts81100.3 (0.1–0.6)
 Dairy81101.4 (0.6–2.4)
 Fish and white meat81100.6 (0.3–1.1)
 Read meat and meat products81101.1 (0.6–1.9)
 Sweets and sweetened drinks81102.4 (1.2–4.1)
  • Body mass index categories are defined according to the World Health Organization. Antihypertensive medications are angiotensin-converting enzyme or angiotensin II receptor blocker. IQR, interquartile range.