Higher showed no clear difference in mortality to hospital discharge compared with lower amino acid intake (low certainty).
It is very uncertain whether higher changes neurodevelopmental disability compared with lower amino acid intake (very low certainty).
It is very uncertain whether higher changes postnatal growth failure at discharge (weight < 10th centile) compared with lower amino acid intake (very low certainty).
It is very uncertain whether higher changes retinopathy of prematurity compared with lower amino acid intake (very low certainty).
Higher leads to higher abnormal blood urea nitrogen (various criteria) compared with lower amino acid intake (high certainty).
It is very uncertain whether higher threshold (500 mL per six hours or greater) changes mortality (at the end of compared with lower threshold (less than 500 mL per six hours) at time of aspiration (very low certainty).
It is very uncertain whether higher threshold (500 mL per six hours or greater) changes pneumonia (until discontinued or up to 28 days) compared with lower threshold (less than 500 mL per six hours) at time of aspiration (very low certainty).