The presence or absence of a corpus luteum was based on endometrial preparation protocols; that is, natural and ovulation induction cycles were considered to mean the formation of a corpus luteum, and a hormone replacement therapy cycle was regarded as meaning the absence of a corpus luteum.
CP, clinical pregnancy; FET, frozen-thawed embryo transfer; LB, live birth
a P -value < 0.05 compared with phenotype A
b P -value < 0.05 compared with phenotype B
c P -value < 0.05 compared with phenotype C
d P -value < 0.05 compared with phenotype D
e P -value < 0.05 compared with control group
Table 3 Crude and adjusted ORs of various PCOS phenotypes for abortion and premature delivery