# Noncollapsibility, confounding, and sparse-data bias. Part 2: What should researchers make of persistent controversies about the odds ratio?

> Research article (Journal of Clinical Epidemiology, 2021) · cited 31× · AI/ML

**Wikidata**: [openalex:W3168005375](https://www.wikidata.org/wiki/openalex:W3168005375)  
**Source**: https://4ort.xyz/entity/noncollapsibility-confounding-and-sparse-data-bias-part-2-what-should-researchers-make-of-persistent-controversies-about