| Age (years) |  | |
---|---|---|---|
Observation | 36-39 | 40-45 | Total |
No. of cases | 8 | 9 | 17 |
Total number of embryos biopsied and examined | 45 | 45 | 90 |
No. (%)* of embryos with normal chromosomes | 11 (24.4)a | 3 (6.7)b | 14 (15.6) |
No. (%)* of embryos with abnormal chromosomes | 34 (75.6)a | 42 (93.3)b | 76 (84.4) |
No. (%)** of developing embryos (blastocysts) | 25 (55.6) | 20 (44.4) | 45 (50) |
No. (%)** of arrested embryos | 20 (44.4) | 25 (55.6) | 45 (50) |