[Retracted] Analysis of Relevant Factors Affecting the Pregnancy Rate of Frozen-Thawed Embryo Transfer Cycle

Table 2

Multivariate analysis of factors influencing FET biochemical pregnancy.

Variable	β	Se	Wald		OR (95%CI)
Age	0.129	0.045	2.214	0.042	0.196 (0.068, 0.561)
Infertility years	0.321	0.032	2.456	0.365	0.523 (0.245, 0.756)
Endometrial thickness	0.384	0.106	13.242	0.000	1.468 (1.190, 1.806)
Level	0.235	0.221	12.355	0.245	1.222 (1.054, 1.635)
E2/	0.197	0.087	5.108	0.024	1.218 (1.027, 1.445)
Number of high-quality embryos	0.214	0.024	6.354	0.214	1.011 (0.987, 1.674)

Assignment: age is < 30 years = 0, ≥30 years = 1; infertility years are ≤ 3 years = 0, >3 = 1; endometrial thickness is < 8 mm = 1, 8–10 mm = 2, >10 mm = 3; value is < 0.3 pg/ml = 1, 0.3–0.7 pg/ml = 2, >0.7 pg/ml = 3; E2/value is < 0.3 = 1, 0.3–0.7 = 2, ＞0.7 = 3; the number of high-quality embryos is ≥2 = 0, 1 high-quality embryo = 1.