Path analysis predicting Infant Bayley Motor Scales score by binary antenatal predictors (Model 1). For more details see Additional file 1. Single-headed solid arrows represent the direction of statistically significant paths. Bold path coefficients are the linear regression coefficients. Coefficients in italics are converted odds ratios. CMD: Common mental disorders. W1: Wave 1 (early pregnancy). W2: Wave 2 (late pregnancy).