Table I.
Group 1 | Group 2 | Group 3 | Group 4 | Group 5 | |
---|---|---|---|---|---|
Female age (years) | 35.9±0.5 | 33.7±0.7 | 32.1±0.8* | 31.0±0.7* | 31.3±0.9* |
Number of oocyte retrievals (OR) | 69 | 43 | 29 | 41 | 37 |
Number of MII oocytes injected | 432 | 259 | 266 | 358 | 274 |
Number of MII oocyte fertilized (%) | 331/432 (76.6) | 184/259 (71.0) | 184/266 (69.1)** | 203/358 (56.4)**,***,† | 147/274 (53.6)**,***,† |
Number of embryos cleaved (%) | 328/331 (99.0) | 180/184 (97.8) | 172/184 (93.4)** | 194/203 (96.5)** | 140/147 (95.2)** |
Number of 4-cell, grade 1 and 2 embryos on day 2 (%) | 64/328 (19.5) | 20/180 (11.1)** | 18/172 (10.5)** | 20/194 (10.3)** | 10/140 (7.1)** |
Blastocyst formation rate on day 5 (%) | 62/107 (58.0) | 21/49 (42.8) | 9/62 (40.6)**,*** | 3/60 (32.1)**,*** | 0/4 (0.0)** |
Note. Data are given as mean ± SEM or as absolute values (percentages).*p < 0.05 vs. group 1 (one-way ANOVA//Bonferroni).**p < 0.05 vs. group 1 (Chi-square).***p < 0.05 vs. group 2 (Chi-square).†p < 0.05 vs. group 3 (Chi-square).