Table 2.
Baseline characteristics and clinical features of patients according to age category
| Characteristic | < 65 Years (n = 1,191) | 65–74 Years (n = 586) | ≥ 75 Years (n = 268) | p value |
|---|---|---|---|---|
| Age, yr | 49.6 ± 11.05 | 69.3 ± 2.80 | 79.0 ± 3.53 | < 0.001 |
| Male sex | 783 (61.3) | 336 (56.0) | 153 (54.8) | 0.031 |
| Body mass index, kg/m2 | 23.2 ± 7.83 | 23.0 ± 3.74 | 22.3 ± 3.79 | 0.205 |
| Late referral | 603 (47.3) | 277 (46.2) | 153 (54.8) | 0.070 |
| Past history | ||||
| Hypertension | 944 (74.0) | 503 (83.7) | 231 (82.8) | < 0.001 |
| Diabetes | 599 (47.0) | 375 (62.4) | 117 (41.9) | < 0.001 |
| Heart failure | 31 (2.4) | 18 (3.0) | 14 (5.0) | 0.067 |
| Arteriovenous access typea | ||||
| Percutaneous catheter | 465 (39.0) | 219 (37.4) | 131 (48.9) | 0.001 |
| Tunneled cuffed catheter | 287 (24.1) | 136 (23.2) | 68 (25.4) | 0.001 |
| Arteriovenous access | 439 (36.9) | 231 (39.4) | 69 (25.7) | 0.001 |
| Conversion rate | 94.1 | 90.5 | 80.3 | < 0.001 |
| Chemistry profile | ||||
| Hemoglobin, g/dL | 9.5 ± 2.51 | 9.6 ± 2.04 | 9.4 ± 2.14 | 0.710 |
| Albumin, g/dL | 3.3 ± 1.19 | 3.3 ± 0.64 | 3.2 ± 0.60 | 0.091 |
| Serum creatinine, mg/dL | 9.0 ± 6.49 | 7.0 ± 3.49 | 6.2 ± 3.43 | < 0.001 |
| eGFR, mL/min/1.73 m2 | 10.7 ± 18.67 | 11.3 ± 21.36 | 12.0 ± 14.14 | 0.519 |
Values are presented as mean ± SD or number (%).
a
Arteriovenous fistula or arteriovenous graft.