GSTM1 and anemia (phenotype): The only differences in the significant relations between the anaemia and Hb models were that in the Hb model child RBP, older age, and male sex directly predicted Hb concentration (SDE 0.08, p=.014, SDE ‐0.12, p=.013, and SDE ‐0.14, p=0.006, respectively), and mother's anaemia directly predicted lower Hb concentration (SDE ‐0.09, p=.014; Table 2).