Table 2.

Clinical characteristics of CKD patients with and without walking

CharacteristicNo Walking (n=5022)Walking (n=1341)P Value
Age (yr)70.4±13.871.0±11.60.14
Men, n (%)2876 (57.3)783 (58.4)0.46
BMI (kg/m2)24.0±4.023.9±4.00.65
Median follow-up (range) (yr)1.2 (0.6–2.0)1.8 (1.0–3.3)<0.001
RRT (100 person-yr)32.922.0
Mortality (100 person-yr)5.42.7
CKD stage
 31716 (34.2)576 (43)<0.001
 41020 (20.3)267 (19.9)0.75
 52285 (45.5)498 (37.1)<0.001
Underlying diseases
 Chronic GN1660 (33.1)390 (29.2)<0.001
 DM1928 (38.4)497 (37.2)0.37
 Hypertension745 (14.9)223 (16.7)0.10
Comorbidity
 CAD346 (7.5)92 (6.9)0.97
 DM2078 (41.4)564 (42.1)0.65
 CVA252 (5.5)41 (3.1)0.002
 Cancer235 (5.1)81 (6.0)0.04
Frequency of exercise, n (%)
 04576 (91.1)29 (2.2)<0.001
 1–2 times/wk 61 (1.2)144 (10.7)<0.001
 3–4 times/wk70 (1.4)316 (23.6)<0.001
 5–6 times/wk141 (2.8)528 (39.4)<0.001
 ≥7 times/wk174 (3.5)324 (24.2)<0.001
Duration of exercise, n (%)
 04574 (91.1)17 (1.3)<0.001
 <30 min/session 66 (1.3)510 (38)<0.001
 30–60 min/session135 (2.7)492 (36.7)<0.001
 61–90 min/session171 (3.4)289 (21.6)<0.001
 >90 min/session76 (1.5)33 (2.5)<0.001
Smoking, n (%)
 Current514 (10.2)94 (7.0)<0.001
  Quit304 (6.1)110 (8.2)<0.001
Alcohol use, n (%)
 Current 192 (3.8)32 (2.4)0.01
 Quit240 (4.8)74 (5.5)0.27
Hemoglobin (g/dl)10.0±2.49.8±2.40.01
ESA, n (%)1717 (34.2)455 (33.9)0.86
eGFR (ml/min per 1.72 m2)25.3±17.626.0±17.80.20
  • Values expressed with a plus/minus sign are the mean±SD. BMI, body mass index; DM, diabetes mellitus; CAD, coronary artery disease; CVA, cerebrovascular accident; ESA, erythropoiesis-stimulating agent.