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. Author manuscript; available in PMC: 2026 Jan 22.
Published in final edited form as: Neonatology. 2025 Jan 22;122(3):319–328. doi: 10.1159/000543605

Table 3.

(A) Nutritional intake during the first 4 weeks of life and (B) Spearman correlation for caloric and protein intake for first 4 weeks of life versus z-score for length at 4 weeks of life, 36 weeks PMA and at the time of MRI.

A
Characteristics* Grade 1 BPD
n=19
Grade 2 BPD
n=32
Grade 3 BPD
n=44
P values
Fluid, week 1, ml/kg/day 145 (16) 145 (19) 146 (20) 0.72
Fluid, week 2, ml/kg/day 162 (16) 153 (12) 154 (18) 0.021
Fluid, week 3, ml/kg/day 157 (8) 155 (15) 152 (17) 0.11
Fluid, week 4, ml/kg/day 152 (8) 149 (11) 152 (15) 0.54
Fluid, over 4 weeks of life, ml/kg/day 154 (7) 150 (10) 151 (12) 0.12
Kcal/kg/d, week 1 74 (10) 72 (10) 71 (11) 0.66
Kcal/kg/d, week 2 109 (20) 101 (17) 101 (16) 0.20
Kcal/kg/d, week 3 121 (14) 105 (15) 104 (19) 0.0041
Kcal/kg/d, week 4 120 (13) 113 (12) 109 (19) 0.072
Kcal/kg/d, over 4 weeks 106 (11) 98 (10) 96 (12) 0.031
Protein/kg/day, week 1 3.43 (0.41) 3.45 (0.35) 3.42 (0.42) 0.98
Protein/kg/day, week 2 4.23 (0.40) 3.92 (0.48) 3.98 (0.50) 0.062
Protein/kg/day, week 3 4.22 (0.59) 3.72 (0.51) 3.78 (0.57) 0.021
Protein/kg/day, week 4 4.06 (0.60) 3.92 (0.43) 3.97 (0.62) 0.72
Protein/kg/day, over 4 weeks 3.99 (0.32) 3.75 (0.28) 3.79 (0.38) 0.051
B z-score for length
4 weeks of life 36 weeks PMA Time of MRI
Caloric intake, first 4 weeks of life, kcal/kg/day R=0.21, p=0.04 R=0.25, p=0.02 R=0.41, p<0.001
Protein intake, first 4 weeks of life, g/kg/day R=0.24, p=0.02 R=0.12, p=0.25 R=0.21, p=0.04
*

all data presented as mean (SD); week 1 = day of life 1-7, week 2 = day 8-14, week 3 = d 15-21, week 4 = day 22-28

1 -

one-way ANOVA test is significant; post hoc test showed significant difference between grades 1 and 2, and grades 1 and 3 disease but not significant between grades 2 and 3.

2 -

one-way ANOVA test is marginally significant; post hoc test showed significant difference between grades 1 and 3 disease but not significant between grades 1 and 2, and grades 2 and 3.