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. Author manuscript; available in PMC: 2021 Sep 1.
Published in final edited form as: Environ Res. 2020 Jun 11;188:109728. doi: 10.1016/j.envres.2020.109728

Table 2.

Longitudinal associations between AChE activity and household proximity to the nearest flower crop perimeter among children.

Difference of AChE activity in U/mL (95% CI) per 100m of residential proximity to crops
Model 1 Model 2
Overall (N=623, Nobs=1156) −0.015 (−0.046, 0.016) −0.015 (−0.046, 0.015)
By categories of residential proximity to greenhouse crops
 ≤275m (N=300, Nobs=538) −0.096 (−0.197, 0.004) −0.103 (−0.200, −0.006)
 276 – 500m (N=137, Nobs=192) −0.004 (−0.541, 0.532) −0.230 (−0.751, 0.290)
 >500 m (N=253, Nobs=426) 0.061 (−0.516, 0.661) 0.094 (−0.010, 0.178)

Model 1 adjustments: age, gender, parental education, height-for-age z-score, hemoglobin concentration and examination year.

Model 2 adjustments: Model 1 + cohabitation with a floricultural worker, pesticide use within the residential property lot, neighbor use of pesticides on their property, and examination date (days after a peak exposure period).