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. Author manuscript; available in PMC: 2023 May 15.
Published in final edited form as: Environ Res. 2022 Jan 8;208:112697. doi: 10.1016/j.envres.2022.112697

Table 4.

Associations between lifetime well As level and percent difference in endothelial function as measured by reactive hyperemia index, stratified by sex.

Lifetime well color history Males (N=105) Females (N=94)
N % difference in RHI (95% CI) p-value p-trend N % difference in RHI (95% CI) p-value p-trend
Always blue (<10 μg/L) or blue and green (10–50 μg/L) 10 Ref. -- 0.44 18 Ref. -- 0.04
Always green (10–50 μg/L) or ever red (>50 μg/L) 51 −1.00 (−18.37, 20.08) 0.92 42 −10.33 (−21.96, 3.01) 0.12
Always red (>50 μg/L) 44 −5.35 (−22.28, 15.37) 0.58 34 -14.36 (−25.69, −1.29) 0.03

Model adjusted for participant age, education level and weight at time of assessment and maternal education and land ownership. Percent difference in RHI estimated by back-transformation of beta estimate of natural log transformed reactive hyperemia index (lnRHI)