Fig. 4

Sex-stratified analysis of NO2 exposure during 3-month preconception and gestational period on Odds Ratio (OR) of SGA. A: DLM of NO2 on SGA using DLM among female children (girl); B: DLM of NO2 on SGA using DLM among male children (boy); C: preconception and trimester-averaged model by newborns’ sex. Same covariates were adjusted as full models