. 2023 Jul 18;11:e15709. doi: 10.7717/peerj.15709

Table 4. Univariate logistic analysis of clinical pregnancy rates for infertile patients from two embryo groups.

Variables	Cleavage group			Blastocyst group
	OR	95% CI	P- value	OR	95% CI	P- value
Age (years)	0.92	0.91–0.94	<0.001	0.96	0.93–0.98	0.016
BMI (kg/m²)	0.99	0.96–1.02	0.715	0.98	0.94–1.03	0.499
Duration of infertility (years)	0.97	0.94–0.99	0.024	0.95	0.90–1.01	0.142
Fertilization method (IVF vs. ICSI)	1.02	0.72–1.33	0.774	1.14	0.94–1.71	0.121
Previous cycle attempts
1-2 vs. 0	0.62	0.50–0.77	<0.001	1.02	0.67–1.56	0.932
≥3 vs. 0	0.12	0.06–0.23	<0.001	0.59	0.19–1.83	0.387
Sterility classification (Secondary vs. Primary)	0.83	0.70–0.98	0.039	1.16	0.86–1.56	0.325
Basal FSH (mIU/ml)	0.92	0.89–0.95	<0.001	0.98	0.91–1.05	0.580
Basal LH (mIU/ml)	1.02	0.97–1.06	0.327	0.94	0.87–1.01	0.120
Basal E₂ (pg/ml)	0.99	0.99–1.01	0.232	0.99	0.99–1.01	0.887
hCG day FSH (mIU/ml)	0.95	0.94–0.97	<0.001	0.96	0.93–1.01	0.031
hCG day LH (mIU/ml)	0.98	0.94–1.01	0.179	1.03	0.94–1.11	0.527
hCG day E₂ (pg/ml)
Set 1	Reference			Reference
Set 2	1.54	1.27–1.89	<0.001	0.75	0.52–1.18	0.124
Set 3	1.64	1.28–2.10	<0.001	0.97	0.66–1.43	0.869
Set 4	1.23	0.83–1.84	0.303	0.52	0.29–0.94	0.0308
hCG day P (ng/ml)	0.95	0.73–1.24	0.708	0.50	0.31–0.80	0.004
Endometrial thickness (mm)	1.14	1.09–1.18	<0.001	1.010	0.94–1.09	0.636
No. of retrieved oocytes	1.05	1.03–1.07	<0.001	0.98	0.95–1.02	0.457
No. of inviable embryos	1.08	1.04–1.13	0.003	1.03	0.93–1.06	0.968
No. of embryos transferred (2 vs. 1)	2.30	1.80–2.93	<0.001	1.76	1.05–2.93	0.031

Notes.

Abbreviations