Table 4.
Multivariate model of embryo sex (likelihood male) in relation to age and morphology
| Parameter | Category | OR (95% CI) | p value |
|---|---|---|---|
| Maternal age* | 0.99 (0.97–1.02) | 0.63 | |
| Expansion | 5 or 6 | Reference | |
| 3 or 4 | 0.79 (0.56–1.10) | 0.16 | |
| ICM | A | Reference | |
| B | 1.24 (0.94–1.64) | 0.12 | |
| C | 0.73 (0.42–1.28) | 0.28 | |
| Trophectoderm | A | Reference | |
| B | 0.63 (0.47–0.86) | < 0.01 | |
| C | 0.60 (0.39–0.94) | 0.02 |
Notes: Embryos with no trophoectoderm/ICM grade excluded from multivariate model due to collinearity. Statistically significant findings denoted by italics
*OR refers to per year increase