Cochrane · systematic review · CD013758

Higher versus lower protein intake in formula‐fed term infants

Gonzalez-Garay, AG, Serralde-Zúñiga, AE, Medina Vera, I, et al. · Cochrane Database of Systematic Reviews · 2023 · Cochrane Library

NeonatalAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
14
current version
GRADE rated
10
No studies
4
Included studies
NR
No studies 4 · 28.6%Ungraded 0 · 0%Very low 8 · 57.1%Low 2 · 14.3%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

High‐protein formula versus standard‐protein formula in healthy term infants

Population: healthy, full‐term, formula‐fed infants
7 questions
OutcomeEffectEvidenceStatus / GRADE
Underweight (weight‐for‐age z‐score)
High‐protein formula vs standard‐protein formula
no estimate extracted7 studies · 1629 participantsVery low
Downgraded: risk of bias, inconsistency
Stunting (height‐for‐age z‐score)
High‐protein formula vs standard‐protein formula
no estimate extracted7 studies · 1629 participantsVery low
Downgraded: risk of bias, inconsistency
Wasting (weight‐for‐height z‐score)
High‐protein formula vs standard‐protein formula
no estimate extracted7 studies · 1629 participantsVery low
Downgraded: risk of bias, inconsistency
Overweight
High‐protein formula vs standard‐protein formula
RR 1.26 [0.63, 2.51]1 study · 1090 participantsVery low
Downgraded: risk of bias, imprecision
Obesity
High‐protein formula vs standard‐protein formula
RR 1.96 [0.59, 6.48]1 study · 1090 participantsVery low
Downgraded: risk of bias, imprecision
All‐cause mortality
High‐protein formula vs standard‐protein formula
no estimate extractedNRNo studies
Adverse events
High‐protein formula vs standard‐protein formula
RR 0.93 [0.76, 1.13]4 studies · 445 participantsLow
Downgraded: risk of bias, imprecision

Standard‐protein formula versus low‐protein formula in healthy term infants

Population: healthy, full‐term (37 to 42 weeks), formula‐fed infants
7 questions
OutcomeEffectEvidenceStatus / GRADE
Underweight (weight‐for‐age z‐score)
Standard‐protein formula vs low‐protein formula
no estimate extracted4 studies · 256 participantsVery low
Downgraded: risk of bias, inconsistency
Stunting (height‐for‐age z‐score)
Standard‐protein formula vs low‐protein formula
no estimate extracted4 studies · 256 participantsVery low
Downgraded: risk of bias, inconsistency
Wasting (weight‐for‐height z‐score)
Standard‐protein formula vs low‐protein formula
no estimate extracted4 studies · 256 participantsVery low
Downgraded: risk of bias, inconsistency
Overweight
Standard‐protein formula vs low‐protein formula
no estimate extractedNRNo studies
Obesity
Standard‐protein formula vs low‐protein formula
no estimate extractedNRNo studies
All‐cause mortality
Standard‐protein formula vs low‐protein formula
no estimate extractedNRNo studies
Adverse events
Standard‐protein formula vs low‐protein formula
Peto OR 1.55 [0.7, 3.4]2 studies · 206 participantsLow
Downgraded: risk of bias, imprecision