Fig. 1

Dose-response relationship between ln-transformed levels of PFAS and serum vitamin D concentrations were estimated by RCS models in female population. (A) PFOA, (B) PFOS, (C) PFHxS, (D) PFNA, (E) PFDeA, (F) MeFOSAA. Models were adjusted for age, race, marital status, education, BMI, PIR, serum cotinine, vitamin D supplement use, milk product consumption, activity and six-month examination period. β: beta coefficient; Solid line: beta coefficient; grey-shade: 95%CI