| Table 5. Association between the number of transferred poor quality embryos and single and multiple pregnancy rates by age group | ||||||
| Single gestation n (%) |
PR |
Multiple gestation n (%) |
PR |
P* Value |
||
| Age group | Nº Embryos | |||||
| 1 | 8 (100) | - | 0 (00.0) | - | - | |
| ≤ 35 years | 2 | 42 (70.0) | 1.00 | 18 (30.0) | 1.00 | 0.470 |
| 3 | 35 (63.6) | 0.90 | 20 (36.4) | 1.21 | - | |
| 4 | 2 (100) | - | 0 (00.0) | - | - | |
| 1 | 5 (100) | - | 0 (00.0) | - | - | |
| 36 e 39 years | 2 | 19 (65.5) | 1.00 | 10 (34.5) | 1.00 | 0.432 |
| 3 | 29 (74.4) | 1.13 | 10 (25.6) | 0.74 | - | |
| 4 | 1 (100) | - | 0 (00.0) | - | - | |
| 1 | 7 (100) | - | 0 (00.0) | - | - | |
| ≥ 40 years | 2 | 15 (71.4) | 1.00 | 6 (28.6) | 1.00 | 0.893 |
| 3 | 19 (79.2) | 1.11 | 5 (20.8) | 0.73 | - | |
| 4 | 11 (84.6) | 1.18 | 2 (15.4) | 0.54 | - | |