Table 1.

Inclusion and exclusion criteria for the EsNuPI study.

Inclusion Criteria	Exclusion Criteria
Healthy participants between 1 and <10 years old without diseases entailing changes in their dietary patterns.	Children with any disease that causes changes in their dietary patterns or any dietary restriction, or children following a therapeutic diet due to recent surgery or any other medical prescription and pathology.
Children whose parents/caregivers report that they are following their habitual diet.	Children whose parents reported that they were not following a normal diet for any reason, including a transitory pathology (cold, flu, gastroenteritis, chickenpox, etc.) at the time of the fieldwork.
Children whose parents or caregivers can read and understand the questionnaires properly.	Children following a vegan diet.
	Children who live in an institution (boarding schools, nursing homes, hospitals, host institutions, etc.).
	Children related to Madison MK or Lactalis employees *.
	Children whose parents or caregivers did not provide a signed consent form for their participation or did not complete any study phase.

* Children related to employees of Madison MK, company in charge of the interviews, and Lactalis, the flagship company of “Instituto Puleva de Nutrición”, the financing collaborator of this project are excluded in order to avoid bias because the parents could be aware of the study and their answers could be conditioned, and bias due to the consumption of Lactalis-branded product within these families.