| Table 2. Binary and linear regression analysis' results for the predictive factors of BNAN on days 2 and 3 of embryo development | ||||
| Predictive variables | Response variables | |||
| Occurrence of BNAN on D2 | Incidence of BNAN on D2 | |||
| OR | CI | r | p-value | |
| Maternal age (y-old) | 0.99 | 0.98-1.01 | -0.2329 | 0.250 |
| Paternal age (y-old) | 1.01 | 0.99-1.02 | 0.2807 | 0.055 |
| Total FSH administered (IU) | 1.00 | 1.00-1.00 | -0.0016 | 0.222 |
| Estradiol level (pg/mL) | 1.00 | 1.00-1.00 | 0.0008 | 0.113 |
| Retrieved oocytes | 1.01 | 1.00-1.02 | -0.0117 | 0.895 |
| Occurrence of BNAN on D3 | Incidence of BNAN on D3 | |||
| OR | CI | r | p-value | |
| Maternal age (y-old) | 0.99 | 0.98-1.01 | 0,0177 | 0.884 |
| Paternal age (y-old) | 1.00 | 0.99-1.01 | -0,03926 | 0.666 |
| Total FSH administered (IU) | 1.00 | 1.00-1.00 | 0,0013643 | 0.096 |
| Estradiol level (pg/mL) | 1.00 | 1.00-1.00 | -0,0000579 | 0.854 |
| Retrieved oocytes | 1.02 | 1.00-1.03 | 0,06099 | 0.240 |
| Note: BNAN, blastomere with no apparent nucleus; D2, day 2 of embryo development; D3, day 3 of embryo development; OR, odds ratio; CI, confidence intervals; r, regression coefficient; IU, international units. | ||||