Association of BMI and the interaction of PUFA intake and Amerindian admixture in a multiethnic sample of children. Predicted BMI calculated from multiple variable linear regression model including Amerindian admixture, PUFA intake, interaction of Amerindian admixture and PUFA intake controlled for age, sex, ethnicity, tanner stage, total energy intake, and socioeconomic status. PUFA intake and Amerindian admixture interaction was significant (p = 0.0471). Symbols represent the following levels of Amerindian admixture (0%), (25%), (50%), (75%) and + (100%).