Table 4

Analysis of factors related to early miscarriage in the Frozen-Thawed embryo transfer cycle.

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.