PLOD1 and polycystic ovary syndrome: In PCOS patients, LH level on hCG trigger day as a continuous variable was positively associated with live birth in both univariable (OR=1.066; 95%CI, 1.011-1.124) and multivariable analyses (adjusted OR = 1.084; 95% CI, 1.022–1.149), with results similar to those of NOR (Supplementary Tables 1, 3).