Table 3.
Characteristics of patients with and without chronic pain
| Characteristic | Chronic Pain | No Chronic Pain | Pa |
|---|---|---|---|
| n | 51 | 49 | |
| Gender: male/female | 19/32 | 26/23 | NS |
| Age (yr; mean ± SD) | 64.0 ± 12.5 | 65.0 ± 15.2 | NS |
| Time on dialysis (mo; mean ± SD) | 48.0 ± 50.2 | 32.5 ± 29.7 | NS |
| Origin: Arab/non-Arab | 17/34 | 14/35 | NS |
| Hypertension: yes/no | 42/9 | 45/4 | NS |
| Diabetes: yes/no | 30/21 | 23/26 | NS |
| Diabetic retinopathy: yes/no | 26/25 | 10/39 | 0.002 |
| Diabetic neuropathy: yes/no | 23/28 | 5/44 | 0.001 |
| IHD: yes/no | 26/25 | 20/29 | NS |
| PAD: yes/no | 9/42 | 5/44 | NS |
| CVA: yes/no | 8/43 | 10/39 | NS |
| BMI (kg/m2; mean ± SD) | 28.9 ± 7.1 | 27.2 ± 6.7 | NS |
| Kt/V (mean ± SD) | 1.33 ± 0.22 | 1.41 ± 0.27 | NS |
| Malignancy: yes/no | 11/40 | 10/39 | NS |
| Calcium (mg/dl; mean ± SD) | 9.6 ± 0.7 | 9.3 ± 0.5 | 0.008 |
| Phosphorus (mg/dl; mean ± SD) | 5.3 ± 1.3 | 5.1 ± 1.4 | NS |
| Calcium-phosphorus product (mg2/dl2; mean ± SD) | 51.0 ± 13.1 | 47.6 ± 13.8 | NS |
| iPTH (pg/ml; mean ± SD) | 180 ± 180 | 110 ± 86 | 0.016 |
| 25 (OH)D3 (μg/L; mean ± SD) | 17.4 ± 9.4 | 19.9 ± 10.6 | NS |
| Calcitriol (pg/ml; mean ± SD) | 14.3 ± 6.0 | 18.0 ± 8.0 | 0.01 |
| Albumin (g/dl; mean ± SD) | 3.8 ± 0.3 | 3.8 ± 0.4 | NS |
| Hemoglobin (g/dl; mean ± SD) | 11.8 ± 1.2 | 12.0 ± 1.1 | NS |
| Iron (μg/dl; mean ± SD) | 70.9 ± 24.9 | 72.3 ± 22.2 | NS |
| Vitamin B12 (ng/L; mean ± SD) | 653 ± 283 | 588 ± 267 | NS |
| Folic Acid (μg/L; mean ± SD) | 8.7 ± 2.4 | 9.2 ± 1.9 | NS |
| Ferritin (μg/L; mean ± SD) | 1172 ± 650 | 1107 ± 561 | NS |
| CRP (mg/dl; mean ± SD) | 1.52 ± 1.41 | 2.02 ± 3.71 | NS |
a
NS, P > 0.05.