fig1

Figure 1. Dose-response relationships between organophosphate ester (OPE) metabolite concentrations and sleep duration (A) and sleep problems (B). The models were adjusted for covariates including age, sex, race, education, body mass index (BMI), marital status, alcohol consumption status, smoking status, and poverty-income ratio (PIR). CI: Confidence interval; DPHP: diphenyl phosphate; BDCPP: bis(1,3-dichloro-2-propyl) phosphate; BCPP: bis(1-chloro-2-propyl) phosphate; BCEP: bis(2-chloroethyl) phosphate; DBUP: dibutyl phosphate.