Autism Spectrum Disorder and Particulate Matter Air Pollution before, during, and after Pregnancy: A Nested Case–Control Analysis within the Nurses’ Health Study II Cohort

http://dx.doi.org/10.1289/ehp.1408133



Table 3. ORs (95% CI) for ASD per IQR increase in PM2.5 levels in different time periods, nonmovers only.a
Exposure period OR (95% CI) per 4.40 μg/m3 PM2.5
Unadjusted Adjustedb Mutually adjustedc
aRestricted to nonmovers who also have data on all exposure periods (158 cases, 977 controls). bAdjusted for child sex, year of birth, month of birth, maternal age at birth, paternal age at birth, census income. cMutually adjusted for other two exposure periods, as well as all other covariates listed above.
9 months before conception 1.20 (0.98, 1.47) 1.32 (1.04, 1.69) 0.83 (0.58, 1.19)
Whole pregnancy 1.37 (1.09, 1.71) 1.50 (1.16, 1.94) 1.63 (1.08, 2.47)
9 months after birth 1.19 (0.96, 1.49) 1.29 (1.00, 1.67) 0.96 (0.65, 1.40)