There are multiple definitions:
ongoing pregnancy rate(English)
- high cumulative rates can be obtained with transfers of embryos derived from fresh and cryopreserved oocytes in a typical infertile population. Ongoing pregnancy is defined when the pregnancy had completed ≥20 weeks of gestation. Among various infertility factors, only female age influenced significantly the outcome
- ART, COC, FSH, ICSI
- Embryology /reproduction, Gynecology, Pregnancy
- https://dx.doi.…3/humrep/deq046
ortho-to-para ratio(English)
- the ratio of water molecules with different nuclear spins
- Ratio-based metric
- https://doi.org…-6361/201015101
operative performance rating(English)
- controlling for the amount of supervising surgeon guidance has important implications for training and evaluation when preparing residents to practice independently
- OR, PGY
- Surgery, Education
- https://doi.org…urg.2011.09.003