Table 3 Adjusted ^a odds ratios and 95% CI of CHD and exposure to O₃, NO₂, NO, SO₂, CO of first 3 months of pregnancy in single pollutant model.

1^st M^b

1.06 (1.00–1.13)

1.07 (0.96–1.18)

1.15 (0.99–1.33)

2^nd M^c

1.10 (1.03–1.17)

1.09 (0.97–1.21)

1.24 (1.07–1.44)

3^rd M^d

1.12 (1.05–1.19)

1.17 (1.05–1.31)

1.31 (1.13–1.51)

1^st M^b

0.90 (0.79–1.02)

0.83 (0.67–1.03)

0.72 (0.53–1.03)

2^nd M^c

0.94 (0.84–1.06)

0.89 (0.73–1.09)

0.81 (0.60–1.11)

3^rd M^d

0.90 (0.81–1.01)

0.91 (0.76–1.09)

0.80 (0.60–1.06)

1^st M^b

0.92 (0.81–1.04)

0.90 (0.72–1.12)

0.91 (0.67–1.24)

2^nd M^c

0.87 (0.76–0.99)

0.82 (0.65–1.03)

1.07 (0.78–1.46)

3^rd M^d

0.83 (0.73–0.95)

0.81 (0.64–1.02)

0.97 (0.68–1.38)

1^st M^b

0.97 (0.90–1.06)

0.99 (0.86–1.14)

1.01 (0.81–1.26)

2^nd M^c

0.92 (0.84–1.01)

0.93 (0.81–1.07)

0.97 (0.77–1.21)

3^rd M^d

0.99 (0.91–1.08)

1.12 (0.87–1.29)

1.05 (0.85–1.30)