Table 7.

Adjusted associations between wildfire smoke PM_2.5 exposure (µg/m³) and secondary outcomes.

		Crude Association		Adjusted Association 1
Outcome	Model/Parameter	OR (95%CI)	p-Value	OR (95%CI)	p-Value
Small for Gestational Age
	Distributed Lag Model 2
	First Trimester	1.012 (0.977, 1.048)	0.49	1.060 (1.001, 1.124)	0.047
	Second Trimester	1.070 (1.034, 1.106)	<0.0001	1.040 (0.979, 1.104)	0.20
	Third Trimester	1.026 (0.995, 1.057)	0.098	1.023(0.971, 1.078)	0.39
	Mean	1.036 (1.017, 1.054)	0.0001	1.041 (1.008, 1.075)	0.013
	Full Gestation Model 3	1.121 (1.064, 1.180)	<0.0001	1.088 (0.999, 1.185)	0.054
Low Birth Weight (<2500 g)
	Distributed Lag Model 2
	First Trimester	1.011 (0.978, 1.045)	0.51	1.030 (0.962, 1.103)	0.40
	Second Trimester	1.076 (1.042, 1.111)	<0.0001	1.004 (0.936, 1.078)	0.90
	Third Trimester	0.983 (0.955, 1.012)	0.25	1.031 (0.971, 1.095)	0.31
	Mean	1.023 (1.005, 1.040)	0.011	1.022 (0.985, 1.060)	0.25
	Full Gestation Model 3	1.062 (1.011, 1.116)	0.017	1.075 (0.973, 1.187)	0.15

¹ Model adjusted for: Ozone, non-wildfire PM_2.5, PM₁₀, temperature deviation, calendar month, year, mother’s race/ethnicity, mother’s education, income, mother’s age, smoking during pregnancy, drinking during pregnancy, asthma, gestational age, and gindex. ² Model includes trimester-specific parameters for wildfire smoke PM_2.5, non-wildfire PM_2.5, PM₁₀, ozone, and temperature deviation. ³ Model includes a single, full gestation, parameter each for wildfire smoke PM_2.5, non-wildfire PM_2.5, PM₁₀, ozone, and temperature deviation.