Table 3 Results of 2PN embryo developmental parameters from TLS. TLS: time-lapse system; 2PN: two pronuclei; DC: direct cleavage; RC: reverse cleavage; MN2: multinucleation at the two-cell stage; a vs. a, b vs. b, c vs. c were significantly different.
Parameter | Group 1 | Group 2 | Group 3 | P |
|---|---|---|---|---|
No. transfers (n) | 422 | 617 | 156 | / |
2PN (%,n) | 79.17 (3910/4939)a, b | 72.54 (5786/7976)a, c | 56.05 (1065/1900)b, c | < 0.001 |
≥ 3PN (%,n) | 0 (0/4939)a, b | 12.69 (1012/7976)a, c | 32.74 (622)b, c | < 0.001 |
Cleavage (%,n) | 98.36 (3846/3910) | 98.45 (5696/5786) | 98.22 (1046/1065) | 0.584 |
D3 good quality embryos (%,n) | 47.76 (1837/3846) | 49.17 (2801/5696) | 46.37 (485/1046) | 0.213 |
D3 available embryos (%,n) | 85.78 (3299/3846) | 84.64 (4821/5696) | 84.03 (879/1046) | 0.382 |
Blastocyst formation (%) | 58.35 (1925/3299) | 59.30 (2859/4821) | 57.45 (505/879) | 0.362 |
DC (%,n) | 26.29 (1011/3846) | 25.09 (1429/5696) | 23.52 (246/1046) | 0.069 |
RC (%,n) | 5.90 (227/3846) | 6.00 (342/5696) | 6.41 (67/1046) | 0.617 |
MN2 (%,n) | 18.33 (705/3846)a | 19.45 (1108/5696)b | 25.62 (268/1046)a, b | 0.012 |
