Table 2 Baseline characteristics of the study subjects according to the PEW score
From: A simple protein-energy wasting score for survival prediction of maintenance hemodialysis patients
Scores 0–1 | Score 2 | Score 3 | Score 4 | ||
|---|---|---|---|---|---|
Clinical and laboratory parameters | All | Severe wasting | Moderate wasting | Slight wasting | Normal nutritional status |
Number of patients | 254 | 36 | 82 | 97 | 39 |
Number of deaths | 26 | 11 | 7 | 5 | 3 |
Age (years) | 59.3 ± 12.8 | 66.2 ± 11.5** | 63.1 ± 11.8** | 55.9 ± 12.6 | 53.6 ± 11.3 |
Male (%) | 72.8 % | 75.0 % | 69.5 % | 70.1 % | 84.6 % |
Dry weight (kg) | 60.2 ± 13.5 | 56.2 ± 9.6** | 56.8 ± 14.0** | 60.4 ± 13.2** | 70.7 ± 10.2 |
BSA (m2) | 1.65 ± 0.20 | 1.59 ± 0.17** | 1.59 ± 0.21** | 1.65 ± 0.20** | 1.78 ± 0.16 |
Dialysis vintage (years) | 11.0 ± 7.7 | 8.8 ± 7.7 | 11.0 ± 6.9 | 12.0 ± 8.1 | 10.3 ± 7.8 |
C-reactive protein (mg/dL) | 0.29 ± 0.41 | 0.31 ± 0.29 | 0.31 ± 0.43 | 0.26 ± 0.31 | 0.33 ± 0.63 |
Serum albumin (g/dL) | 3.88 ± 0.32 | 3.60 ± 0.28** | 3.76 ± 0.29** | 3.98 ± 0.27** | 4.13 ± 0.19 |
SCr (μmol/L) | 1050 ± 217 | 808 ± 185** | 999 ± 178** | 1120 ± 173* | 1208 ± 200 |
SCr/BSA (μmol/L/m2) | 641 ± 121 | 507 ± 101** | 632 ± 110* | 684 ± 108 | 678 ± 99 |
Kt/V | 1.45 ± 0.24 | 1.39 ± 0.23 | 1.47 ± 0.24* | 1.49 ± 0.24* | 1.38 ± 0.19 |
nPCR (g protein/kg/day) | 0.93 ± 0.17 | 0.78 ± 0.14** | 0.88 ± 0.16** | 1.00 ± 0.16 | 1.01 ± 0.13 |