2. Miscarriage rate: per embryo transfer data.
Study | Intervention (number of embryo transfer) | Control (number of embryo transfer) | Miscarriage rate | P value |
Karimzadeh 2012 | Natural cycle FET | HT FET | 41.7% vs 22.2% | n/s |
FET: frozen‐thawed embryo transfer; HT: hormone therapy; n/s: not significant.