Table 5 Adjusted^a odds ratios and 95% CI of CHD and exposure to O₃, NO₂, NO, SO₂, CO of first 3 months of pregnancy in two pollutant model.

O3

1st M^b

1.05 (0.98–1.12)

1.03 (0.92–1.16)

1.09 (0.92–1.29)

2nd M^c

1.10 (1.03–1.17)

1.07 (0.96–1.20)

1.23 (1.05–1.43)

3rd M^d

1.11 (1.04–1.19)

1.16 (1.03–1.30)

1.29 (1.11–1.50)

NO2

1st M^b

0.94 (0.82–1.08)

0.86 (0.67–1.10)

0.79 (0.55–1.13)

2nd M^c

0.97 (0.86–1.10)

0.91 (0.74–1.12)

0.89 (0.65–1.22)

3rd M^d

0.95 (0.85–1.06)

0.97 (0.80–1.16)

0.93 (0.69–1.25)

O3

1st M^b

1.05 (0.99–1.12)

1.05 (0.94–1.18)

1.15 (0.98–1.34)

2nd M^c

1.08 (1.01–1.16)

1.06 (0.94–1.19)

1.27 (1.09–1.49)

3rd M^d

1.11 (1.04–1.18)

1.15 (1.03–1.29)

1.31 (1.14–1.52)

SO2

1st M^b

0.94 (0.83–1.07)

0.93 (0.73–1.18)

0.99 (0.71–1.36)

2nd M^c

0.90 (0.79–1.03)

0.84 (0.66–1.06)

1.19 (0.86–1.65)

3rd M^d

0.86 (0.75–0.98)

0.84 (0.66–1.06)

1.08 (0.75–1.54)

O3

1st M^b

1.06 (1.00–1.13)

1.07 (0.96–1.19)

1.16 (1.00–1.35)

2nd M^c

1.09 (1.02–1.16)

1.07 (0.96–1.20)

1.25 (1.07–1.45)

3rd M^d

1.13 (1.06–1.20)

1.20 (1.07–1.33)

1.32 (1.15–1.52)

CO

1st M^b

1.00 (0.92–1.09)

1.02 (0.88–1.18)

1.08 (0.86–1.35)

2nd M^c

0.94 (0.86–1.03)

0.95 (0.82–1.10)

1.02 (0.82–1.27)

3rd M^d

1.03 (0.94–1.12)

1.18 (1.02–1.36)

1.13 (0.91–1.41)