Fig. 1From: The reduction of birth weight by fine particulate matter and its modification by maternal and neighbourhood-level factors: a multilevel analysis in British Columbia, CanadaAdjusted predicted effects of PM2.5 on birth weight. Predicted effects of PM2.5 on birth weight with 95Â % confidence intervals are conditional on model covariates included in Model 4. Black vertical lines represent the frequency distribution of PM2.5 Back to article page