# Statistical considerations of phase 3 umbrella trials allowing adding one treatment arm mid-trial

> Research article (Contemporary Clinical Trials, 2021) · cited 17× · AI/ML

**Wikidata**: [openalex:W3190491802](https://www.wikidata.org/wiki/openalex:W3190491802)  
**Source**: https://4ort.xyz/entity/statistical-considerations-of-phase-3-umbrella-trials-allowing-adding-one-treatment-arm-mid-trial