system
Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE. Meshes: Adult, Blastocyst, Cohort Studies, Embryonic Development, Female, Fertilization, Fertilization in Vitro, Follicle Stimulating Hormone, Humans, Linear Models, Live Birth, Maternal Age, Multivariate Analysis, Reproductive Techniques, Assisted, Time Factors, Time-Lapse Imaging.
user
Is timing of human preimplantation embryonic development confounded by embryo origin? Context: To what extent do patient- and treatment-related factors explain the variation in morphokinetic parameters proposed as embryo viability markers?
assistant
Up to 31% of the observed variation in timing of embryo development can be explained by embryo origin, but no single factor elicits a systematic influence. Final Decision: yes