| Features | t | P-value | Mean difference | 95% CI of the difference | |
|
| Lower | Upper | |||
| Age, years | −0.7 | 0.485 | −1.26 | −4.9 | 2.4 |
| BMI | 1.4 | 0.165 | 0.9 | −0.4 | 2.4 |
| Insulin resistance | −2.0 | 0.051 | −0.7 | −1.4 | 0.0 |
| Endometrial thickness (mm) | −2.8 | 0.009 | −4.6 | −8.0 | −1.7 |