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Relative geometric mean concentrations* of male IGFs and IGFBPs by ethnic/racial group. p for heterogeneity is the heterogeneity of means between categories, tested using the F test. *Relative to non‐Hispanic whites, adjusted for study, age, height and BMI. #Significant heterogeneity by study p < 0.01. Abbreviations: Af Am/Cab, African American/Caribbean; IGF, insulin‐like growth factor; IGFBP, insulin‐like growth factor‐binding protein.
