Use of negative control outcomes to assess the comparability of patients initiating lipid-lowering therapies

Authors: Sara N. LevintowAlexander Breskin

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Challenge

NCOs had been proposed as tools to assess unmeasured confounding in comparative drug studies, but their real-world performance had not been rigorously validated in a large lipid-lowering therapy cohort using an active comparator new-user design.

Solution

Target RWE researchers applied NCOs to a real-world comparative analysis of patients initiating lipid-lowering therapies, demonstrating how NCO balance and imbalance can be used to gauge confounding control success before primary outcomes are analyzed.

Impact

Validating NCO utility in a large active-comparator lipid study demonstrates that Target RWE's NCO-based validity checking can reliably detect confounding structure, providing pharma partners with a credible bias-assessment tool for regulatory submissions.