This study compares pregnancy outcomes from two methods of frozen embryo transfer: modified natural cycles (NC-FET) and hormonally controlled cycles (HC-FET).
The research involved 428 patients undergoing a total of 493 cycles, focusing on outcomes like clinical pregnancy and delivery rates, with careful protocols for each method.
Results showed similar clinical pregnancy (54.3% for NC-FET vs. 52.5% for HC-FET) and delivery rates (47.2% for NC-FET vs. 43.6% for HC-FET), indicating both methods are effective for transferring frozen-thawed blastocysts.