Nutritional and speech therapy guidance for the introduction of foods in infants: dietary profile and risk of pediatric feeding disorder.

Families were not randomly assigned to guidance. They ended up in the guided group because they had come to the clinic for feeding advice, and in the non-guided group because they had come for something else. The differences may reflect who these families were rather than what the guidance did. Everything was measured at the same moment. The study cannot tell whether the guidance came before the better diet and lower feeding-disorder risk, or whether these families were already doing things differently. The two groups differed in age at assessment (9.4 months guided versus 8.5 months non-guided). The authors did not adjust for this, saying the sample was too small, and argued the gap was small enough not to matter. Diet, breastfeeding and feeding-difficulty information came from parents' recall, which can be inaccurate. Follow-up was short. The authors say differences in feeding and feeding-disorder risk may only show up after 12 months of age. The authors do not know what advice the doctors and nurses in the non-guided group actually gave, which they call a possible source of bias. Sixty infants at one hospital in one region of Brazil, so the numbers are small and the setting is specific.

The only funding statement names the Fundo de Incentivo à Pesquisa (FIPE) CCS/UFSM, an institutional research incentive fund at the authors' own university. No commercial sponsor is named, and the text provided carries no conflict-of-interest declaration beyond the funding line.

Do not read this as proof that feeding guidance prevents feeding problems. The two groups were not randomly assigned; families who came to the clinic for feeding guidance were compared with families who came to the same clinic for other reasons, so the better diets and lower feeding-disorder scores may reflect differences between these families rather than anything the guidance did.