Characteristics | Study group | p | |
---|---|---|---|
D5 (n = 782) | D6 (n = 343) | ||
Age (years) | 32.5 ± 4.5 | 33.1 ± 4.7 | 0.050 |
Husband’s age (years) | 33.3 ± 5.0 | 33.9 ± 4.8 | 0.035 |
Quality of blastocysts | |||
 High | 743 (95%) | 251 (73.2%) | < 0.001 |
 General | 39 (5%) | 92 (26.8%) | |
Incubation outcomes | |||
 Hatched | 593 (75.8%) | 228 (66.5%) | < 0.001 |
 Full recovery | 174 (22.3%) | 90 (26.2%) | |
 Partial recovery | 15 (1.9%) | 25 (7.3%) |