Air quality during gestation, life of the child, and at time of testing
PM25_T1	PM2.5 24 hour – Average of gestation weeks 1-13 (trimester 1) – ugm3
PM25_T2	PM2.5 24 hour – Average of gestation weeks 14-26 (trimester 2) – ugm3
PM25_T3	PM2.5 24 hour – Average of gestation weeks 27-delivery (trimester 3) – ugm3
Temp_T1	Temperature – Average of gestation weeks 1-13 (trimester 1) – Temperature
Temp_T2	Temperature – Average of gestation weeks 14-26 (trimester 2) – Temperature
Temp_T3	Temperature – Average of gestation weeks 27-delivery (trimester 3) – Temperature
PM25_chronic	PM2.5 Mean of 1 year prior to June 1 of the year of the EOG test
PM25_acute	PM2.5 Mean of 30 days prior to May 1 of the year of the EOG test
Birth information
BWTpct	Birthweight Percentile (based on clinical estimate of gestation)
WeeksGest	Weeks Gestation, Clinical estimate
mEdu	Mother’s Education Group at time of birth (NoHS = No high school diploma, HS = High school diploma, College = College diploma)
mRace	Mother’s Race/Ethnicity Group (White = White, NH Black = Non-Hispanic Black, Hispanic = Hispanic)
mAge	Mother’s Age at time of birth
Male	Male Infant? (1 = Yes)
NotMarried	Not Married at time of birth? (1 = Yes)
Smoker	Mother Smoked? (1 = Yes)
PTB	Pre-Term Birth (<37 wks, Clinical)? (1 = Yes)
Education / EOG test information
EOG_Reading	Reading scale score for chronologically first EOG test taken (4th grade); centered and scaled by year (2010, 2011, 2012)
EOG_Math	Math scale score for chronologically first EOG test taken (4th grade); centered and scaled by year (2010, 2011, 2012)
Blood lead level information
Blood_lead	Blood Lead Level (micrograms per deciliter); maximum value if there are multiple tests
Social / Economic factors
NDI_birth	Neighborhood Deprivation Index, at Birth
NDI_test	Neighborhood Deprivation Index, at time of EOG test
RI_birth	Residential Isolation for non-Hispanic Black, at Birth
RI_test	Residential Isolation for non-Hispanic Black, at time of EOG Test
EconDisadv	Participation in the free/reduced price lunch program (1 = Yes)