Early Onset Obesity and Risk of Metabolic Syndrome Among Chilean Adolescents

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A flow diagram describes 1) participant recruitment into an infancy iron deficiency anemia (IDA) preventive trial (N = 1,798) or a neuromaturation study (n = 135); 2) randomization group for those in the IDA preventive trial (infants without iron deficiency anemia randomized to high iron [n = 782], low iron [n = 432], usual nutrition [n = 584] ); 3) completion of the infancy studies at age 6 to 12 months (preventive trial, n = 1,657 [high iron, n = 718; low iron, n = 405; usual nutrition, n = 534] , or neuromaturation study, n = 135); 4) the sample for the 5-year follow up (n = 888) recruited from high iron, usual nutrition group, and neuromaturation study, from which the 5) adolescent cardiovascular disease risk study was drawn (n = 677), and 6) the analytic sample for the study of the relationship between early onset obesity and risk of metabolic syndrome (n = 673) after participants without complete data (n = 4) were excluded.

Figure.
Flow of participants in study on relationship between early onset obesity and metabolic syndrome risk in adolescence, Santiago, Chile, 2009–2012. Participants were drawn from a larger study of infancy iron-deficiency anemia.

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