Table 3.
Results of vitrified/warmed embryo cycles considering the operator who performed the manual vitrification or warming with Irvine®-CBS®
| Vitrification operator | A | B | C | D | E | _ | _ | _ | _ | _ |
| Warming operator | _ | _ | _ | _ | _ | A | B | C | D | E |
| Mean female age at vitrification | 33.4 ± 4.9 | 33.5 ± 4.2 | 32.9 ± 5.2 | 32.6 ± 4.5 | 32.5 ± 3.3 | 33.3 ± 4.8 | 33.7 ± 4.4 | 33.2 ± 4.0 | 32.7 ± 4.6 | 32.6 ± 4.8 |
| Number of thawing cycles | 65 | 71 | 55 | 45 | 30 | 57 | 67 | 23 | 54 | 65 |
| Number of transfers | 65 | 71 | 55 | 45 | 30 | 57 | 67 | 23 | 54 | 65 |
| Number of thawed embryos | 81 | 91 | 72 | 59 | 35 | 73 | 85 | 36 | 63 | 81 |
| Number of lost embryos during thawing | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
| Positive survival rate (%) (% embryos with at least 50% of intact blastomeres) | 79/81 (97) | 87/91 (96) | 68/72 (94) | 54/59 (92) | 35/35 (100) | 73/73 (100) | 81/85 (95) | 32/36 (89) | 59/63 (94) | 78/81 (96) |
| Intact survival rate (% embryos with 100% of intact blastomeres) | 70/81 (86) | 79/91 (87) | 63/72 (88) | 48/59 (81) | 32/35 (91) | 67/73 (92) | 69/85 (81) | 29/36 (81) | 53/63 (84) | 74/81 (91) |