Daily protein and arginine intake (mean;SD) and plasma arginine levels (median;IQR)
| Study | Group | Birthweight (g) | Protein intake (g/kg/day) | Arginine intake (mg/kg/day) | Plasma arginine (micromol/l) |
|---|---|---|---|---|---|
| RCT1 (AA-P) | CPN (n = 50) HPN (n = 52) | 870 (167) 858 (166) | 2.6 (0.4) 3.0 (0.5) | 201 (44) 230 (55) | 42 (26–61)* 47 (29-75)* |
| RCT2 (AA-V) | CPN (n = 62) HPN (n = 45) | 868 (174) 917 (157) | 3.0 (0.2) 3.6 (0.5) | 175 (14) 215 (32) | 34 (21–45)** 40 (25-53)** |