Table 6 Multivariate regression analysis for clinical pregnancy.

From: Effects of serum estrogen levels before frozen-thawed blastocyst transfer on pregnancy outcomes in hormone replacement cycles

Factors

OR

95% CI

P

Age

0.927

0.882–0.974

0.003

Endometrial thickness on the transformation day

1.088

0.955–1.240

0.203

Endometrial thickness on the blastocyst transfer day

1.021

0.917–1.137

0.705

Days of taking progynova

1.086

0.988–1.194

0.086

Estrogen level on the transformation day

1.000

0.999–1.000

0.275

Estrogen level on the blastocyst transfer day

1.000

0.999–1.000

0.246

Progesterone level on the blastocyst transfer day

1.016

0.990–1.044

0.232

Number of high-quality blastocysts transferred

1.723

1.231–2.411

0.002