Fig. 2
From: Fresh or frozen day 6 blastocyst transfer: is there still a question?
Comparison of live birth rate following fresh D6 versus frozen overall D6 or elective frozen D6 blastocysts transfer (*p < 0.05; **p < 0.001). Frozen overall D6 group = 1st warming cycle of a D6 blastocyst with possible previous fresh or frozen D5 embryo transfer. Elective frozen D6 = a subgroup among the Frozen overall D6 group that consisted of a 1st warming cycle of a D6 blastocyst, during a freeze-all cycle without any previous fresh or frozen D5 embryo transfers