Odds ratio and 95% confidence intervals of logistic regression model of birth outcomes by perfluorinated compounds in cord blood.

Abbreviations: PFNA, perfluorononanoic acid; PFOA, perfluorooctanoic acid; PFOS, perfluorooctyl sulfonate; PFUA, perfluoroundecanoic acid. *P<0.05; **P<0.01; ***P<0.001 (P value are 2 sided). aFor PFOA, PFNA and PFUA, concentration value below LOQ were set to be 1/2 LOQ. bModel adjusted for maternal age, prepregnancy body mass index, education level, log (Ln)-transformed cord blood cotinine levels, type of delivery, parity and infant sex and gestational age for low birth weight.