Figure 2
From: Racial differences in IGF1 methylation and birth weight
Models for mediation analysis for the relationship of Black race, IGF1 methylation and gestational age-adjusted birth weight. (A) The unmediated model used to calculate the total effect. (B) The mediated model used to calculate the controlled direct effect. The calculated regression coefficients for the total effect, χ’, and the controlled direct effect, χ, are given.