Table 1.
Quantitative and categorical parameters that were statistically different for the cycles resulting in live birth and for the cycles with negative outcome (t test was performed for the quantitative parameters and χ2 test for the categorical parameters)
| Live birth | No live birth | |||||
|---|---|---|---|---|---|---|
| Quantitative variables | Mean | SD | Mean | SD | p value | Difference characterization |
| Age (female) | 34.64 | 3.9989 | 36.01 | 4.0968 | 0.0044 | Somewhat |
| Age at menarche | 13.2 | 1.9834 | 12.28 | 1.7064 | < 0.0001 | Highly |
| Difficulty during ET | 1.78 | 0.4147 | 1.93 | 0.6125 | 0.0062 | Weak |
| Endometrium thickness prior to OR | 10.26 | 1.8045 | 9.63 | 1.9172 | 0.0101 | Weak |
| ET/2PN | 0.48 | 0.2614 | 0.6 | 0.3104 | 0.0035 | Somewhat |
| TQE D3 | 1.51 | 1.4577 | 0.85 | 1.2947 | 0.0002 | Somewhat |
| TQE D3/2PN | 0.29 | 0.2608 | 0.18 | 0.2571 | 0.0016 | Somewhat |
| Total gonadotropins | 2620.7 | 996.5 | 2906.3 | 1138.1 | 0.0472 | Weak |
| Categorical variables | Chi-square | Odds ratio | 95% lower CI | 95% upper CI | p value | Difference characterization |
| Age group | 8.8028 | NA | NA | NA | 0.012 | Weak |
| Dyspareunia | 9.9988 | 3.9512 | 1.5914 | 9.8101 | 0.002 | Somewhat |
| Fresh or frozen cycle | 7.5309 | 0.4201 | 0.2230 | 0.7914 | 0.006 | Weak |
| Menarche > 12 years | 19.7164 | 0.2292 | 0.1145 | 0.4588 | < 0.0001 | Highly |
ET, embryo transfer; OR, oocyte retrieval; ET/2PN, ratio of number of embryos transferred to the uterus to oocytes fertilized (2PN) following OR; TQE D3, top-quality embryos at day 3 of development; TQE D3/2PN, ratio of top-quality embryos at day 3 of development to oocytes fertilized (2PN); total gonadotropins, total dose of gonadotropins administered (IU) during the stimulation protocol in a single cycle