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Table 1 Clinical and biochemical characteristics of included patients at baseline
| Control | Nutr. supple. | Statistics | |
|---|---|---|---|
| Gender, male/% | 71/44.1 | 68/46.9 | χ2 = 0.24, P = 0.62 |
| Age, years | 78.2 ± 6.7 | 77.6 ± 6.0 | t = − 1.80, P = 0.07 |
| Weight, kg | 56.50 ± 8.70 | 58.25 ± 8.30 | t = − 1.57, P = 0.12 |
| Body mass index, kg/m2 | 21.3 ± 2.0 | 21.6 ± 2.1 | t = 0.85, P = 0.39 |
| Serum albumin concentration, g/dL | 3.24 ± 0.12 | 3.23 ± 0.12 | t = 0.67, P = 0.51 |
| Total lymphocyte count (TLC), /dL | 1463 ± 171 | 1481 ± 162 | t = − 0.93, P = 0.35 |
| Hemoglobin, g/L | 118.3 ± 11.3 | 118.9 ± 11.1 | t = − 0.46, P = 0.65 |
| Blood urea nitrogen, mmol/L | 5.3 ± 1.56 | 5.4 ± 1.4 | t = − 0.52, P = 0.60 |
| Comorbidities | |||
| Hypertension, n/% | 19/11.8 | 20/13.8 | χ2 = 0.27, P = 0.60 |
| Diabetes mellitus, n/% | 10/6.2 | 16/11 | χ2 = 2.28, P = 0.13 |
| Congestive heart failure, n/% | 4/2.5 | 4/2.8 | χ2 = 0a, P = 1 |
| COPD, n/% | 4/2.5 | 2/1.4 | χ2 = 0.08a, P = 0.78 |
| Chronic renal failure, n/% | 2/1.2 | 2/1.4 | χ2 = 0 a, P = 1 |
| Hepatitis, n/% | 1/0.6 | 0 | P = 1b |
| Others, n/% | 0 | 0 | – |
