# The impact of standardizing the definition of visits on the consistency of multi-database observational health research

> Research article (BMC Medical Research Methodology, 2015) · cited 28× · AI/ML

**Wikidata**: [openalex:W2074620598](https://www.wikidata.org/wiki/openalex:W2074620598)  
**Source**: https://4ort.xyz/entity/the-impact-of-standardizing-the-definition-of-visits-on-the-consistency-of-multi-database-observational-health-research