Computing a URF ( underreporting factor) by comparing data bases is not ‘ magic”. It is a science-driven statistical method to calculate data accuracy and provide a risk-benefit analysis to protect the subjects of an experiment, Something the CDC should be doing with its own experts. But has failed to do. For some inexplicable reason, Maybe “head in the sand”. Or worse.
Earlier Kirsch had argued that was a reason to fire John Su.
“Dr. John Su is the government’s top expert on reporting safety signals to the CDC and FDA. His incompetence/corruption in failing to compute a simple number required for a proper risk-benefit analysis, has led to the needless loss of life of over 150,000 Americans.,
https://stevekirsch.substack.com/p/its-time-for-john-su-to-go