Table 4.

Crude and adjusted associations between wildfire smoke PM_2.5 exposure (µg/m³) and birth weight (g).

	Crude Model		Adjusted Model *
	Estimate (95%CI)	p-Value	Estimate (95% CI)	p-Value
First Trimester	2.9 (−1.1, 6.9)	0.16	−5.7 (−11.1, −0.4)	0.036
Second Trimester	11.7 (−15.7, −7.8)	<0.0001	3.0 (−2.7, 8.6)	0.3
Third Trimester	4.2 (0.8, 7.7)	0.017	−3.4 (−8.3, 1.6)	0.19
Mean Over All Trimesters	−1.5 (−3.6, 0.5)	0.14	−2.0 (−5.0, 0.9)	0.18
Full Gestation	−4.8 (−10.8, 1.1)	0.11	−2.0 (−9.9, 5.9)	0.61

* Model adjusted for: Ozone, non-wildfire PM_2.5, PM₁₀, temperature deviation, month, year, mother’s race/ethnicity, mother’s education, income, mother’s age, smoking during pregnancy, drinking during pregnancy, maternal asthma, gindex, and gestational age.