Table 4 Regression analysis of factors for the prediction of a cumulative live birth for the fresh plus all frozen embryo transfer cycles.
Factors predicting a cumulative live birth | Coefficient(B) | S.E | Wald (χ2) | P value | Hazard ratio (95% CI) |
|---|---|---|---|---|---|
Maternal age | − 0.135 | 0.039 | 11.877 | 0.001 | 0.874 (0.809–0.943) |
Type of infertility | |||||
Primary infertility | 1 | ||||
Secondary infertility | − 0.052 | 0.198 | 0.069 | 0.794 | 0.949 (0.644–1.400) |
Infertility duration | 0.000 | 0.022 | 0.000 | 0.988 | 1.000 (0.958–1.043) |
Cycle number | |||||
The first cycle | 1 | ||||
The second cycle | 0.084 | 0.200 | 0.175 | 0.676 | 1.087 (0.734–1.610) |
Treatment protocol | |||||
GnRHa | 1 | ||||
CC cotreatment | 0.388 | 0.201 | 3.725 | 0.084 | 1.475 (0.994–2.187) |
Body mass index | 0.000 | 0.000 | 0.160 | 0.689 | 1.000 (1.00–1.00) |
Basal FSH | 0.026 | 0.035 | 0.545 | 0.461 | 1.026 (0.958–1.098) |
AMH | 0.116 | 0.041 | 18.77 | < 0.001 | 1.112 (1.017–1.431) |
Total Gn dosage | 0.000 | 0.000 | 0.570 | 0.450 | 1.000 (1.00–1.00) |
Days of stimulation | − 0.106 | 0.073 | 2.102 | 0.147 | 0.900 (0.780–1.038 |
No. of oocytes retrieved | 0.023 | 0.020 | 1.378 | 0.240 | 1.023 (0.985–1.063) |
No. of available embryos | 0.352 | 0.050 | 50.517 | < 0.001 | 1.422 (1.290–1.567) |
Cause of infertility | |||||
Tubal | 1 | ||||
Male factor | 0.439 | 0.307 | 2.043 | 0.153 | 1.551 (0.850–2.830) |
Anovulatory | − 0.460 | 0.456 | 1.017 | 0.313 | 0.631 (0.258–1.543) |
Unexplained | 0.087 | 0.210 | 0.173 | 0.678 | 1.091 (0.723–1.657) |
Diminished ovarian reserve | 0.055 | 0.308 | 0.032 | 0.857 | 1.057 (0.578–1.933) |
Endometriosis | 0.371 | 0.420 | 0.782 | 0.376 | 1.449 (0.637–3.298) |
Mixed | 0.689 | 0.741 | 0.865 | 0.352 | 1.991 (0.466–8.506) |
