# Selection bias was reduced by recontacting nonparticipants

> Research article (Journal of Clinical Epidemiology, 2016) · cited 26× · AI/ML

**Wikidata**: [openalex:W2301516251](https://www.wikidata.org/wiki/openalex:W2301516251)  
**Source**: https://4ort.xyz/entity/selection-bias-was-reduced-by-recontacting-nonparticipants