Tertile 1 is the reference category. MBP mono-n-butyl phthalate (ng/mL); MBzP, monobenzyl phthalate (ng/mL); MCNP, monocarboxynonyl phthalate (ng/mL); MCOP, monocarboxyoctyl phthalate (ng/mL); MCPP, mono(3-carboxypropyl) phthalate; MECPP, mono(2-ethyl-5-carboxypenty) phthalate; MEHHP, mono(2-ethyl-5-hydroxyhexyl) phthalate; MEHP, mono(2-ethylhexyl) phthalate (ng/mL); MEOHP, mono(2-ethyl-5-oxohexyl) phthalate; MEP, monoethyl phthalate (ng/mL); MHNCH, cyclohexane-1,2-dicarboxylic acid-mono(hydroxy isononyl) ester (ng/mL); MiBP, mono-isobutyl phthalate; MNP, monoisononyl phthalate (ng/mL); RR, relative risk; T2, second tertile; and T3, third tertile.