Table 1 Characteristics and protein intake of the study cohort.
Characteristic | n (%) |
|---|---|
Postnatal age at sampling (day) | |
1 | 4 (1) |
2 | 16 (5) |
3 | 34 (11) |
4 | 28 (9) |
5 | 233 (72) |
6 | 6 (2) |
7 | 1 (<1) |
Died before discharge | 51 (16) |
Male | 147 (46) |
Small for gestational age | 37 (12) |
Clinical outcome | |
Necrotizing enterocolitis | 40 (12) |
Early-onset sepsis | 7 (2) |
Late-onset sepsis | 110 (34) |
Patent ductus arteriosus | 140 (44) |
Intraventricular haemorrhage | |
None | 223 (69) |
Grade 1 | 45 (14) |
Grade 2 | 20 (6) |
Grade 3 | 8 (3) |
Grade 4 | 21 (7) |
Grade 5 | 3 (1) |
Chronic lung disease | 208 (65) |
Retinopathy of prematurity | |
None | 116 (36) |
Stage 1 | 66 (21) |
Stage 2 | 64 (20) |
Stage 3 | 38 (12) |
Stage 4 | 1 (<1) |
No eye exam performed | 35 (11) |
Missing | 2 (<1) |
Mean daily protein intake (g/kg per day) | Mean (SD) |
On sample day | |
Intravenous | 3.41 (1.08) |
Enteral | 0.29 (0.33) |
Total | 3.70 (1.07) |
From birth to sample day | |
Intravenous | 3.10 (0.81) |
Enteral | 0.14 (0.13) |
Total | 3.24 (0.82) |
