| Table 3. Meta-analysis results of clinical pregnancy rates across regions: difficult vs. easy embryo transfer. Re-analysis of the study by Galati et al. (2023). | |||||||||
| Geographical Region | Number of |
Odds Ratio (95% Confidence |
I2 (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Australia | 1 | 0.738 (0.598, 0.909) | . | <0.001 | |||||
| Austria | 1 | 0.798 (0.535, 1.191) | . | 0.27 | |||||
| Finland | 1 | 0.612 (0.468, 0.8) | . | <0.001 | |||||
| France | 2 | 0.789 (0.625, 0.997) | 0 | 0.05 | |||||
| India | 1 | 0.675 (0.324, 1.406) | . | 0.29 | |||||
| Iran | 1 | 0.442 (0.282, 0.693) | . | <0.001 | |||||
| Israel | 1 | 1.097 (0.702, 1.716) | . | 0.68 | |||||
| Saudi Arabia | 1 | 0.627 (0.29, 1.356) | . | 0.24 | |||||
| Spain | 2 | 0.596 (0.497, 0.714) | 0 | <0.001 | |||||
| Turkey | 2 | 0.824 (0.686, 0.989) | 0 | 0.04 | |||||
| United Kingdom | 1 | 0.608 (0.319, 1.158) | . | 0.13 | |||||
| United States | 3 | 0.73 (0.596, 0.892) | 0 | 0.001 | |||||
| Overall effect size | 17 | 0.708 (0.644, 0.778) | 21.31 | <0.001 | |||||