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. Author manuscript; available in PMC: 2019 Feb 1.
Published in final edited form as: Environ Res. 2018 Feb;161:580–587. doi: 10.1016/j.envres.2017.11.047

Table 4.

Results of a GEE predicting summed neurotoxicant risk at US public school

Parameter Parameter
Estimate		 Standard
Error		 Lower 95%
Confidence
Interval		 Upper 95%
Confidence
Interval		 p
Intercept 3.582 0.003 3.576 3.588 <0.001
Total Students 0.011 0.001 0.009 0.014 <0.001
Prop. Free/Reduced Meals 0.001 0.003 −0.006 0.006 0.964
Prop. Free/Reduced Meals Squared 0.001 0.003 −0.005 0.008 0.732
Prop. Hispanic 0.017 0.003 0.012 0.022 <0.001
Prop. Black 0.031 0.003 0.026 0.037 <0.001
Prop. API 0.012 0.002 0.008 0.015 <0.001
Prop. Other −0.015 0.002 −0.019 −0.012 <0.001
Early Education1 0.031 0.003 0.026 0.037 <0.001
Junior High1 −0.004 0.001 −0.006 −0.002 <0.001
High School1 −0.011 0.002 −0.015 −0.008 <0.001
Ungraded/All Grades1 −0.037 0.005 −0.045 −0.028 <0.001
Prop. Urban (in county) 0.170 0.004 0.163 0.177 <0.001
Scale 0.002

Notes: All continuous predictors were standardized. Model uses an exchangeable correlation matrix, inverse Gaussian with logarithmic link, and adjusts for clustering at the school district level.

1

Reference: Elementary School