Figure 3

Relationship between individual NO ₂ exposure during the second trimester and small for gestational age, in birth weight and in birth length in a multivariate analysis. Graphical estimation of the association and 95% confidence intervals for the non-linear model with lower AIC (degrees of freedom: df). A). Logit of small for gestational age in birth weight and NO₂ exposure (2 df). Footnote for Figure 3(A): For SGA (in birth weight) the model with the best adjustment was the linear model. (B). Logit of small for gestational age in birth length and NO₂ exposure (2 df). Footnote for Figure 3(B): For SGA (in birth length) the model with the best adjustment was the linear model.