a decreasing trendp = 0.001
Stratified analysis of euploidy rates based on different morphological grades and embryonic days showed a decreasing trend in euploid + balanced rates from good (AA, AB, BA) to fair (BB) to poor (BC, CB, AC, CA, CC) embryos (PGT-A group: 53.0% vs. 47.8% vs. 40.0%, p = 0.001; PGT-SR group: 38.3% vs. 31.7% vs. 28.6%, p = 0.001).