We also found that pregnant women with PM 2.5 exposures in the highest quartile ( ≥ 129.9 and ≤ 2100 μg/m 3 ) had a borderline significant association (p = 0.054) with DBP compared to those who had PM 2.5 exposures in the lowest quartile ( ≥ 9.4 and < 47.7 μg/m 3 ).
However, a marginally significant association was observed for BC and DBP in both log linear exposure and categorical exposure models after removing the highest 1% of exposure measurements ( Table S9 ). 4 Discussion This is the first study to examine the relationship between HAP and gestational blood pressure using quantitively measured personal exposures and blood pressure among pregnant Indian women using solid fuels in their early pregnancy.