在所有年齡層  囊胚持續著床率比較

第5天優質囊胚>第 5 天中等囊胚>5 天差等囊胚>第 6 天胚胎 

第 5 天囊胚著床率與年齡>36歲有輕微負相關

第 6 天囊胚著床率與年齡>36歲有較明顯負相關

質量最佳的整倍體第 5 天胚胎在所有年齡的著床率高達 80%。

質量一般/較差的第 5 天胚胎和第 6 天胚胎的著床率約 50% 

 https://www.sciencedirect.com/science/article/pii/S1472648321002923

There was a clinically significant higher sustained implantation rate at all ages for euploid day 5 good quality embryos compared with day 5 fair, day 5 poor and day 6 embryos.

• For all ages the sustained implantation rates for day 5 good quality blastocysts were higher than for day 5 fair, day 5 poor and day 6 blastocysts. 
• At a maternal age of 36 years the best-fit sustained implantation rates were 86% for day 5 good quality blastocysts, 64% for day 5 fair, 63% for day 5 poor, and 51% for all day 6 blastocysts analysed as one group. 
• The best-fit sustained implantation rates for age 33 compared to age 39 years were 86% versus 80% for day 5 good, 71% versus 62% for day 5 fair, 59% versus 55% for day 5 poor, and 81% versus 46% for all day 6.
• The best quality euploid day 5 embryos had a SIR of 80–90% at all ages. 
• Even fair/poor quality day 5 embryos and day 6 embryos had a SIR of approximately 50% or greater. 
• euploid blastocyst transfers a reasonable performance goal is an overall SIR of 60–65% per embryo and a LBR of 50–60% per embryo.