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. 2008 Jun 2;116(10):1411–1415. doi: 10.1289/ehp.11311

Table 3.

Correlations of air pollutants’ trimester average concentration during the first 3 months pregnancy.

CO NOx O3 PM10 SO2
CO 1.00 0.82* −0.19 −0.19 0.24
NOx 1.00 −0.05 0.56* 0.45*
O3 1.00 0.39 0.23
PM10 1.00 0.50*
SO2 1.00
*

p < 0.05.