Early miscarriage rate (%) | Single-factor | Multivariate-factor analysis | |||
analysis | |||||
OR | P | OR | OR | ||
Endometrial preparation protocol | |||||
HRT cycle | 17.3 | ||||
NC cycle | 13.1 | 0.720 | 0.022 | 0.73 | 0.034 |
OI cycle | 15.1 | 0.849 | 0.434 | 0.876 | 0.538 |
Embryo type | |||||
Cleavage-stage embryo | 16.5 | ||||
Blastocyst-stage embryo | 15.6 | 0.968 | 0.599 | – | – |
Embryo number | |||||
1 | 19.6 | ||||
2 | 15.2 | 0.733 | 0.039 | 0.708 | 0.026 |
HRT: hormone replacement treatment; NC: natural cycle; OI: ovulation induction.