fig4

Figure 4. Weighted quantile sum (WQS) model weights of OPE metabolites for sleep duration in the negative direction (A) and for sleep problems in the positive direction (B). The model was adjusted for covariates including age, sex, race, education, BMI, marital status, alcohol status, smoking status, and PIR. OPE: Organophosphate ester; BMI: body mass index; PIR: poverty-income ratio; BCEP: bis(2-chloroethyl) phosphate; BDCPP: bis(1,3-dichloro-2-propyl) phosphate; DPHP: diphenyl phosphate; BCPP: bis(1-chloro-2-propyl) phosphate; DBUP: dibutyl phosphate.