Table 1.
Homogeneity test for demographic, dialytic, and clinical characteristics (n = 39)
| Characteristic | Exercise group | Control group | χ2 or t | p-value |
|---|---|---|---|---|
| Demographic characteristic | ||||
| No. of patients | 18 | 21 | ||
| Age (yr) | 57.61 ± 13.69 | 56.76 ± 12.32 | 0.20 | 0.84 |
| Sex | ||||
| Male | 10 (55.6) | 10 (47.6) | 0.24 | 0.62 |
| Female | 8 (44.4) | 11 (52.4) | ||
| Spouse | ||||
| Yes | 17 (94.4) | 18 (85.7) | 0.80 | 0.61a |
| No | 1 (5.6) | 3 (14.3) | ||
| Educational level | ||||
| ≤High school | 10 (55.6) | 16 (76.2) | 1.86 | 0.17 |
| ≥College | 8 (44.4) | 5 (23.8) | ||
| Job | ||||
| Full time | 3 (16.7) | 3 (14.3) | 1.42 | 0.49 |
| Part time | 3 (16.7) | 7 (33.3) | ||
| None | 12 (66.7) | 11 (52.4) | ||
| Religion | ||||
| Yes | 14 (77.8) | 12 (57.1) | 1.86 | 0.31a |
| No | 4 (22.2) | 9 (42.9) | ||
| Health insurance | ||||
| National | 15 (83.3) | 16 (76.2) | 0.30 | 0.70a |
| Medicaid | 3 (16.7) | 5 (23.8) | ||
| Monthly income ($) | ||||
| <2,000 | 12 (66.7) | 18 (85.7) | 1.98 | 0.26a |
| ≥2,000 | 6 (33.3) | 3 (14.3) | ||
| Dialysis-related characteristic | ||||
| Hemodialysis vintage (yr) | 2.38 ± 2.72 | 5.74 ± 3.99 | –3.10 | 0.004 |
| Dialysis duration/session (min) | 223.61 ± 17.81 | 228.10 ± 19.14 | 0.75 | 0.46 |
| Blood flow rate (mL/min) | 281.67 ± 23.58 | 276.19 ± 24.39 | 0.71 | 0.48 |
| Dialysate flow rate (mL/min) | 516.67 ± 70.71 | 571.43 ± 130.93 | 1.67 | 0.11 |
| Dialyzer efficacy | ||||
| High | 12 (66.7) | 17 (81.0) | 2.26 | 0.32a |
| Medium | 5 (27.8) | 2 (9.5) | ||
| Low | 1 (5.6) | 2 (9.5) | ||
| Fistula type | ||||
| Arteriovenous fistula | 16 (88.9) | 16 (76.2) | ||
| Arteriovenous graft | 2 (11.1) | 5 (23.8) | 1.06 | 0.42a |
| Clinical characteristic | ||||
| Hemoglobin (g/dL) | 10.70 ± 1.18 | 10.25 ± 1.04 | –1.27 | 0.21 |
| Albumin (g/dL) | 3.87 ± 0.18 | 3.77 ± 0.49 | –0.92 | 0.37 |
| Calcium (mg/dL) | 8.65 ± 0.65 | 8.77 ± 0.67 | –0.58 | 0.57 |
| Phosphorus (mg/dL) | 5.04 ± 1.32 | 4.81 ± 1.50 | 0.48 | 0.62 |
| Potassium (mEq/L) | 5.10 ± 0.71 | 4.69 ± 0.68 | 1.80 | 0.08 |
| Creatinine (mg/dL) | 10.09 ± 2.44 | 10.38 ± 2.21 | –0.38 | 0.71 |
| Urea reduction ratio (%) | 74.78 ± 3.83 | 74.98 ± 4.00 | 0.16 | 0.88 |
| Cause of renal failure | ||||
| Diabetes | 7 (38.9) | 11 (52.4) | 0.82 | 0.70a |
| Hypertension | 7 (38.9) | 6 (28.6) | ||
| Others | 4 (22.2) | 4 (15.1) | ||
| Charlson comorbidity index | 5.33 ± 2.35 | 5.14 ± 2.26 | 0.26 | 0.80 |
| Dry body weight (kg) | 58.95 ± 10.30 | 56.57 ± 9.95 | 0.73 | 0.47 |
Data are expressed as number only, mean ± standard deviation, or numer (%).
a
Fisher exact test.