Evidence map›Paper›PMID 34173914›Full record

ArticleJournal of assisted reproduction and genetics2021

Embryo selection with artificial intelligence: how to evaluate and compare methods?

Mikkel Fly Kragh, Henrik Karstoft

Registry-linked trialAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07611448 (An Observational Study of Artificial Intelligence-Assisted Blastocyst Morphokinetic Analysis Using Short-Duration Video and Its Association With Pregnancy Outcomes), which is not on this map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT07611448 enrolling by invitationnot on this mapstarted 2026, after this paper: background citation

An Observational Study of Artificial Intelligence-Assisted Blastocyst Morphokinetic Analysis Using Short-Duration Video and Its Association With Pregnancy Outcomes

Typeobservational_patient_registrySponsorViable BiosciencesRan2026 to 2029Enrolled1,000ConditionsInfertility Assisted Reproductive Technology, Infertility (IVF Patients)
3 · Its place in the literature

Who cites it

50 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  19. The Integration of Artificial Intelligence inJournal of pharmacy & bioallied sciences · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Mikkel Fly KraghDepartment of Electrical and Computer Engineering, Aarhus University, Aarhus N, Denmark. mikkelkragh@gmail.com.ORCID http://orcid.org/0000-0002-0829-1450
Henrik KarstoftDepartment of Electrical and Computer Engineering, Aarhus University, Aarhus N, Denmark.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Embryo selection within in vitro fertilization (IVF) is the process of evaluating qualities of fertilized oocytes (embryos) and selecting the best embryo(s) available within a patient cohort for subsequent transfer or cryopreservation. In recent years, artificial intelligence (AI) has been used extensively to improve and automate the embryo ranking and selection procedure by extracting relevant information from embryo microscopy images. The AI models are evaluated based on their ability to identify the embryo(s) with the highest chance(s) of achieving a successful pregnancy. Whether such evaluations should be based on ranking performance or pregnancy prediction, however, seems to divide studies. As such, a variety of performance metrics are reported, and comparisons between studies are often made on different outcomes and data foundations. Moreover, superiority of AI methods over manual human evaluation is often claimed based on retrospective data, without any mentions of potential bias. In this paper, we provide a technical view on some of the major topics that divide how current AI models are trained, evaluated and compared. We explain and discuss the most common evaluation metrics and relate them to the two separate evaluation objectives, ranking and prediction. We also discuss when and how to compare AI models across studies and explain in detail how a selection bias is inevitable when comparing AI models against current embryo selection practice in retrospective cohort studies.

Indexed as

Artificial IntelligenceArea Under CurveBlastocystCalibrationCryopreservationDatabases, FactualDecision Making, Computer-AssistedEmbryo TransferFemaleFertilization in VitroHumansImage Processing, Computer-AssistedPregnancySample SizeSensitivity and SpecificityArtificial intelligenceEmbryo selectionModel evaluation and comparisonSelection bias

Identifiers

PMID34173914
PMCPMC8324599

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.