Fig. 2.

Forest plot of the pooled standardised mean difference of offspring’s birth weight between the high and low acrylamide exposure groups (The pooled standardised mean difference suggested that offspring’s birth weight was significantly lower in high acrylamide exposure group. a: quantile 2 v. quantile 1; b: quantile 3 v. quantile 1; c: quantile 4 v. quantile 1; e: tertile 2 v. tertile 1; f: tertile 3 v. tertile 1)