# A method for sample size calculation via E‐value in the planning of observational studies

> Research article (Pharmaceutical Statistics, 2020) · cited 10× · AI/ML

**Wikidata**: [openalex:W3080098108](https://www.wikidata.org/wiki/openalex:W3080098108)  
**Source**: https://4ort.xyz/entity/a-method-for-sample-size-calculation-via-evalue-in-the-planning-of-observational-studies