Table 3 Percent difference in growth comparing change in pregnancy-averaged levels of air pollutants from 10 to 90th percentile (single-pollutant models)

PM_2.5

3rd trimester to 2 years

1.08

1.00

1.16

0.04

1.06

0.99

1.14

0.09

3rd trimester to 3 months

1.55

1.20

1.99

 < 0.01

1.51

1.14

1.99

 < 0.01

3 months to 6 months

1.18

0.85

1.62

0.32

1.13

0.88

1.45

0.33

6 months to 2 years

0.94

0.85

1.04

0.24

0.94

0.86

1.01

0.11

PM₁₀

3rd trimester to 2 years

1.00

0.92

1.08

0.94

0.96

0.89

1.04

0.30

3rd trimester to 3 months

1.16

0.89

1.51

0.28

1.02

0.76

1.38

0.87

3 months to 6 months

1.19

0.84

1.69

0.32

1.13

0.86

1.49

0.37

6 months to 2 years

0.92

0.81

1.04

0.19

0.91

0.83

1.00

0.06

NO₂

3rd trimester to 2 years

1.04

0.97

1.12

0.25

1.04

0.96

1.11

0.34

3rd trimester to 3 months

1.64

1.27

2.13

 < 0.01

1.56

1.17

2.07

 < 0.01

3 months to 6 months

1.00

0.72

1.39

0.99

1.03

0.80

1.33

0.82

6 months to 2 years

0.90

0.82

1.00

0.04

0.90

0.84

0.98

0.01

O₃

3rd trimester to 2 years

0.98

0.92

1.05

0.64

0.95

0.89

1.02

0.15

3rd trimester to 3 months

0.68

0.54

0.86

 < 0.01

0.60

0.46

0.78

 < 0.01

3 months to 6 months

1.08

0.80

1.46

0.61

1.10

0.87

1.40

0.43

6 months to 2 years

1.10

1.00

1.21

0.06

1.09

1.01

1.17

0.03