Rogers P A, Milne B J, Trounson A O
J In Vitro Fert Embryo Transf. 1986 Apr;3(2):93-8. doi: 10.1007/BF01139353.
A comparison of the implantation rates following in vitro fertilization (IVF) and embryo transfer (ET) for four major groups indicates differences in the implantation rates as well as in the incidence of multiple implantation. By assuming that the probability of implantation is the product of two variables, uterine receptivity (U) and embryo viability (E), estimates for U and E are derived for each of the four IVF groups using maximum likelihood methods. The UE model is tested using chi-squared goodness-of-fit methods for predicted implantation rates versus observed. The possibility that differences in U values between groups are due to different ovarian stimulation protocols is discussed, as is the value of the UE model in highlighting differences between IVF groups and its importance in predicting multiple pregnancy rates.
对四个主要组进行体外受精（IVF）和胚胎移植（ET）后的着床率比较表明，着床率以及多胎着床发生率存在差异。假设着床概率是子宫接受性（U）和胚胎活力（E）这两个变量的乘积，使用最大似然法为四个IVF组中的每一组得出U和E的估计值。使用卡方拟合优度方法测试UE模型，以比较预测着床率与观察到的着床率。讨论了组间U值差异可能是由于不同的卵巢刺激方案所致，还讨论了UE模型在突出IVF组之间差异方面的价值及其在预测多胎妊娠率方面的重要性。
