Scientific Poster
ISOQOL 2025 Poster: Subgroup or Principal Stratum Analysis? A Comparison and guidance for Use of the Principal Stratum Framework for COA Endpoints
Dec 17, 2025
Download
This poster, presented at the 2025 ISOQOL Annual Meeting, explains what a principal stratum is as per the ICH E9(R1) guideline, how it compares to a subgroup, the associated statistical methodology and when it could be appropriate for use. Resources on how to implement it are also provided.

Related solutions

Contact Us