# Importance of external validation and subgroup analysis of artificial intelligence in the detection of low ejection fraction from electrocardiograms

> Research article (European Heart Journal - Digital Health, 2022) · cited 33× · AI/ML

**Wikidata**: [openalex:W4308144123](https://www.wikidata.org/wiki/openalex:W4308144123)  
**Source**: https://4ort.xyz/entity/importance-of-external-validation-and-subgroup-analysis-of-artificial-intelligence-in-the-detection-of-low-ejection-frac