Table 3 Pregnancy outcomes in different groups
|  | 12-15 mm | 16-17 mm | ≥ 18 mm | χ2 | P |
|---|---|---|---|---|---|
Biochemical pregnancy | 3/13 (23.1) | 8/42 (19.0) | 12/55 (21.8) | 0.273 | 0.895 |
Clinical pregnancy | 3/13 (23.1) | 6/42 (14.3) | 10/55 (18.2) | 0.789 | 0.730 |
Ongoing pregnancy | 2/13 (15.4) | 5/42 (11.9) | 9/55 (16.4) | 0.497 | 0.735 |
Live birth | 2/13 (15.4) | 4/42 (9.5) | 7/55 (12.7) | 0.649 | 0.765 |