Table 1.

Inclusion and exclusion criteria.

Inclusion Criteria	Exclusion Criteria
Publication period: January 1950–May 2021	Articles referring to the Nigerian diet without defining it in any way
Language: English	Articles examining chemical components of a specific food consumed in Nigeria without reference to the wider composition of Nigerian diets
Articles describing as their main focus or side focus the common components of diets/food consumption in Nigeria as a whole or a in a segment of Nigerian society (region, state, specific area, children, farmers, etc.)	Articles related to nutrition outcomes in Nigeria that do not specify any foods/food groups typically consumed by the study population
Study designs: all