Receiver-Operating Characteristics Analysis: A New Approach to Predicting the Presence of Pathogens in Surface Waters

2014 ◽  
Vol 48 (10) ◽  
pp. 5628-5635 ◽  
Author(s):  
Burcu M. Yavuz ◽  
Rachael M. Jones ◽  
Stephanie DeFlorio-Barker ◽  
Ember Vannoy ◽  
Samuel Dorevitch
Keyword(s):  
Surface Waters ◽  
Receiver Operating Characteristics ◽  
Operating Characteristics ◽  
New Approach ◽  
Characteristics Analysis ◽  
Receiver Operating Characteristics Analysis ◽  
Receiver Operating

scholarly journals More is not always better–lower estradiol to mature oocyte ratio improved IVF outcomes

2021 ◽  
Author(s):  
Nardin Aslih ◽  
Mediea Michaeli ◽  
Diana Mashenko ◽  
Adrian Ellenbogon ◽  
Oshrit Lebovitz ◽  
...  
Keyword(s):  
Ovarian Response ◽  
Fertilization Rate ◽  
Mature Oocyte ◽  
Clinical Pregnancy ◽  
Receiver Operating Characteristics ◽  
Operating Characteristics ◽  
Frozen Embryos ◽  
Characteristics Analysis ◽  
Receiver Operating Characteristics Analysis ◽  
Receiver Operating

Aim: To find a cutoff ratio of estradiol/metaphase II oocyte (E2/M2) ratio and to evaluate the correlation with patients' characteristics, embryo morphokinetics using EmbryoScope™ and IVF cycle outcomes. Material and Methods: For this retrospective cohort study, records of all fresh cycles that were cultured and scored by EmbryoScope™ were evaluated. The peak E2/M2 ratio was calculated on the day of human chorionic gonadotropin (hCG) administration and correlated to embryo morphokinetic quality and cycle outcomes. A receiver operating characteristics analysis was calculated for the E2/M2 ratio and clinical pregnancy rates. Results: A total of 2461 oocytes were collected from 319 patients. Receiver operating characteristics analysis revealed a cut-off of 204 as a discriminative point to predict clinical pregnancy with a sensitivity of 69.5% and specificity of 62.1% (P<0.001). E2/M2 >204 group were older, had higher E2 concentration, fewer M2 oocytes despite elevated gonadotrophin doses. E2/M2 ratio ≤ 204 was correlated with higher fertilization rate, better embryo quality, higher pregnancy and live birth rates, and more frozen embryos. Conclusion: E2/M2 ratio<204 yielded the best probability to achieve good quality embryos with good morphokinetic scores and better pregnancy outcomes and may be used to predict IVF cycle outcomes. Advanced maternal age and low ovarian response received higher concentrations of gonadotrophins, which resulted in higher E2/M2 ratio. Milder stimulation to those patients may improve their cycle outcomes.

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