Fig. 4From: The association of DNA methylation with body mass index: distinguishing between predictors and biomarkersPathway diagram for the cross-lagged model for pregnancy and middle-aged mothers. This diagram shows the observed variables in boxes. Single-headed arrows indicate linear regressions, and double-headed, curved arrows indicate variances/covariances. Estimates for the linear relationships are shown on the arrows, as are the values for variances and covariancesBack to article page