Fig. 4
From: PM2.5 constituent exposures and maternal circulatory homocysteine in early pregnancy
Forest plot of subgroup analyses on the associations between average BC exposures during the post-conception period (as a binary variable: > or ≤ 1.6 µg/m3) and percentage changes in serum Hcy. Note: All the associations were adjusted for group (EPL or NEP), Ln5-MeTHF, all demographic characteristics presented in Table 1, temperature, and relative humidity