Fig. 3.

Forest plot of studies investigating the association between the age of introduction of cow’s milk and type 1 diabetes mellitus in healthy, full-term infants up to 3 years of age. Only studies reporting OR are depicted. The study-specific OR and 95 % CI are represented by the black square and horizontal line, respectively; the area of the black square is proportional to the specific-study weight. *The significant association disappeared after adjustment for other factors significantly related to diabetes