Table 2.
Clinical characteristics of three subgroups according to different vitamin C levels in MHD and CAPD groups
| MHD group | CAPD group | |||||
|---|---|---|---|---|---|---|
| group A | group B | group C | group A | group B | group C | |
| Parameters | < 2 ug/ml(n = 44) | 2-4 ug/ml(n = 32) | > 4 ug/ml(n = 41) | < 2 ug/ml(n = 51) | 2-4 ug/ml(n = 56) | > 4 ug/ml(n = 60) |
| Age(year) | 66.4 ± 11.3 | 55.6 ± 12.8a | 54.5 ± 14.5 a | 64.9 ± 11.4 | 57.8 ± 13.7a | 58.4 ± 14.6b |
| Gender(male/female) | 20/24 | 13/19 | 12/29 | 26/25 | 23/33 | 22/38 |
| BMI | 22.6 ± 4.5 | 22.9 ± 4.4 | 22.5 ± 4.0 | 24.0 ± 3.3 | 23.0 ± 2.9 | 23.6 ± 3.3 |
| KT/V | 1.6 ± 0.3 | 1.6 ± 0.3 | 1.7 ± 0.2 | 1.8 ± 0.4 | 1.9 ± 0.3 | 1.9 ± 0.4 |
| Diabetes | 5/39 | 1/31 | 3/38 | 17/34 | 18/38 | 13/47 |
| Vitamin C(ug/ml) | 1.2 ± 0.5 | 2.9 ± 0.6 a | 17.9 ± 20.4 ac | 1.4 ± 0.4 | 3.0 ± 0.6 a | 10.0 ± 10.6ac |
| Prealbumin(mg/l) | 250.5 ± 77.2 | 305.0 ± 72.3 a | 309.2 ± 68.0 a | 337.7 ± 83.7 | 371.6 ± 85.7 b | 400.2 ± 102.1a |
| hsCRP(mg/l) | 3.7(1.5-11.6) | 1.8(0.7-6.3) b | 2.0(0.4-5.1) b | 4.2(1.9-14.8) | 2.1(0.9-6.3) b | 2.1(0.9-5.2)b |
| Albumin(g/l) | 37.4 ± 4.1 | 40.6 ± 3.8 a | 39.3 ± 3.1 b | 34.7 ± 4.6 | 36.8 ± 3.5a | 36.3 ± 4.2b |
| Uric acid(umol/l) | 380.3 ± 77.2 | 397.6 ± 87.4 | 368.9 ± 82.8 | 358.1 ± 86.3 | 380.8 ± 68.6 | 388.4 ± 82.2 b |
| Haemoglobin(g/l) | 107.5 ± 18.7 | 117.5 ± 15.0 b | 106.7 ± 15.7 c | 109.4 ± 13.9 | 110.8 ± 11.8 | 108.4 ± 11.5 |
| Ferritin(ng/ml) | 412.7 ± 247.2 | 397.2 ± 209.4 | 524.5 ± 386.4 | 508.2 ± 330.7 | 372.0 ± 294.3 b | 427.6 ± 309.3 |
| Dialysis vintage(m) | 64.0 ± 48. 2 | 55.3 ± 37.8 | 53.3 ± 46.0 | 27.4 ± 23.1 | 31.1 ± 26.3 | 32.6 ± 26.5 |
aP < 0.01:compared with group A; bP < 0.05:compared with group A; cP < 0.01: compared with group B