# Understanding, Choosing, and Unifying Multilevel and Fixed Effect Approaches

> Research article (Political Analysis, 2020) · cited 65× · AI/ML

**Wikidata**: [openalex:W3115465103](https://www.wikidata.org/wiki/openalex:W3115465103)  
**Source**: https://4ort.xyz/entity/understanding-choosing-and-unifying-multilevel-and-fixed-effect-approaches