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Table 1 Baseline characteristics based on levels of maximum walking speed

From: Evaluating the association between walking speed and reduced cardio-cerebrovascular events in hemodialysis patients: a 7-year cohort study

Characteristic Overall (n = 188) Maximum walking speed P value
Q1 (n = 47) Q2 (n = 47) Q3 (n = 47) Q4 (n = 47)
Age (years) 65 (10) 73 (10) 64 (8) 63 (9) 60 (9) <0.001
Women 98 (52.1) 24 (51) 25 (53) 24 (51) 25 (53) 0.99
Body mass index (kg/m2) 21.2 (3.2) 20.3 (3.2) 21.7 (3.3) 20.7 (3.3) 21.9 (2.8) 0.42
Hemodialysis duration (years) 3.3 (1.4, 9.5) 2.5 (1.2, 8.1) 3.8 (2.0, 12.6) 3.2 (1.8, 7.3) 3.3 (1.0, 8.5) 0.35
Primary kidney disease       0.19
 Diabetic nephropathy 63 (33.5) 17 (36.2) 17 (36.2) 16 (34.0) 13 (27.7)  
 Glomerulonephritis 61 (32.4) 9 (19.1) 15 (31.9) 18 (38.3) 19 (40.4)  
 Hypertension 16 (8.5) 4 (8.5) 5 (10.6) 4 (8.5) 3 (6.4)  
 Polycystic renal disease 7 (3.7) 1 (2.1) 0 (0) 4 (8.5) 2 (4.3)  
 Other nephropathies 41 (21.8) 16 (34.0) 10 (21.3) 5 (10.6) 10 (21.3)  
Comorbid condition
 Presence of cardiac diseasea 91 (48.4) 31 (66.0) 20 (42.6) 26 (55.3) 14 (29.8) 0.003
 Peripheral vascular disease 20 (10.6) 7 (3.7) 5 (2.7) 4 (2.1) 4 (2.1) 0.72
 Presence of diabetes mellitus 76 (40.4) 19 (40.4) 22 (46.8) 18 (38.3) 17 (36.2) 0.74
 Comorbidity score 4.8 (3.0) 6.3 (2.8) 4.7 (3.0) 4.4 (2.9) 3.6 (2.7) <0.001
Laboratory values
 Hemoglobin (g/dL) 10.3 (1.0) 10.2 (0.9) 10.0 (1.0) 10.3 (0.9) 10.4 (1.0) 0.34
 Serum albumin (g/dL) 3.9 (0.3) 3.8 (0.3) 3.8 (0.3) 3.9 (0.3) 4.0 (0.3) 0.02
 Serum C-reactive protein (mg/dL) 0.3 (0.7) 0.4 (0.8) 0.3 (0.7) 0.3 (0.7) 0.3 (0.4) 0.61
Walking ability
 Maximum walking speed (m/min) 87.5 (19.6) 62.7 (11.6) 81.4 (4.9) 94.1 (5.6) 111.9 (8.1) <0.001
  1. Values are expressed as mean (standard deviation), median (25th, 75th percentiles), or number (percentage of total). The cutoff values defining the maximum walking speed quartiles were <79, 79–89, 89–105, and ≥105 m/min in men and <72, 72–85, 85–100, and ≥100 m/min in women
  2. aHistory of coronary disease, congestive heart failure, myocardial infarction, or other cardiac disease