| Table 7. Effect of PGT on delivery rate and miscarriage rate after autologous FET and ODfrozen FET in different age groups. | ||||
| Outcome | Age of women | FET with PGT % | FET without PGT % | P-value (95% CI) |
|---|---|---|---|---|
| Miscarriage | Oocyte donors | 12.1 (38/313) | 16.9 (555/3278) | 0.0351 (0.5-8.5%) |
| Autologous <35 years | 11.2 (35/313) | 15.5 (533/3431) | 0.0513 (0.09-7.8%) | |
| Autologous 35-39 years | 11.5 (72/624) | 18.2 (773/4244) | <0.0001 (3.7-9.4%) | |
| Autologous >39 years | 9.4 (45/478) | 23.0 (462/2010) | <0.0001 (10.1-16.7%) | |
| Delivery | Oocyte donors | 37.7 (237/629) | 31.6 (2457/7774) | 0.0019 (2.2-10.2%) |
| Autologous <35 years | 33.4 (245/734) | 34.1 (2592/7600) | 0.7328 (-3% to 4.3%) | |
| Autologous 35-39 years | 35.1 (498/1417) | 30.4 (3122/10268) | 0.0004 (2.1-7.4%) | |
| Autologous >39 years | 33.2 (363/1095) | 22.2 (1376/6190) | <0.0001 (8.0-14.1%) | |
For miscarriage rate the denominators are clinical pregnancies; for delivery rate, the denominators are embryo transfers.
FET, frozen embryo transfer; OD, oocyte donation (frozen); PGT, preimplantation genetic testing.