| Table 3. Multivariable regression analysis for outcomes. | |||
| Multivariable linear regression analysis of Fertilization rateab | Beta | CI for Beta | p-value |
|---|---|---|---|
| Abstinence period (days) | -1.42 | -3.05, 0.20 | 0.087 |
| Duration of infertility (Y) | -0.70 | -1.20 ,-0.21 | 0.005 |
| Progressive motility of sperm | 1.48 | 0.40, 2.55 | 0.007 |
| No. top-quality embryos transferred | 6.33 | 1.71, 10.95 | 0.007 |
| No. retrieved oocytes | -1.17 | -1.75 ,-0.60 | <0.001 |
| Multivariable linear regression analysis of Cleavage-stage embryo rateab | Beta | CI for Beta | p-value |
| Early or secondary infertility | -3.52 | -6.27 ,-0.77 | 0.012 |
| Progressive motility of sperm | 0.06 | -0.002, 0.128 | 0.056 |
| Sperm morphology | -0.64 | -1.23 ,-0.041 | 0.036 |
| No. oocytes aspirated | -0.35 | -0.68 ,-0.06 | 0.017 |
| Multivariable logistic regression analysis of Implantationab | OR | CI for OR | p-value |
| Female age (Y) | 0.96 | 0.92, 1.00 | 0.089 |
| Etiology (combined vs. all) | 2.05 | 1.30, 3.22 | 0.002 |
| No. top-quality embryos transferred | |||
| 1.92 | 1.20, 3.09 | 0.007 | |
| Multivariable logistic regression analysis of Clinical pregnancy rateab | OR | CI for OR | p-value |
| Female age (Y) | 0.96 | 0.92, 1.00 | 0.072 |
| Etiology (combined vs. all) | 1.98 | 1.25, 3.14 | 0.003 |
a: Regression modeling with a Backward approach.
b: Variables entered for multivariable regression analysis: abstinence period, female age, male age, early or secondary infertility, previous ICSI cycles, ovarian stimulation protocol (agonist vs. antagonist), duration of infertility, semen volume, total sperm count, motility, progressive motility, sperm concentration, sperm morphology, number of aspirated oocytes, number of transferred embryos, etiology (combined vs. other, male factor vs. Other, unexplained vs. other). CI: confidence interval.