In the Lateral Flow

The Brexit Party chairman had over 3,100 shares of his post asserting:

Lateral Flow Tests, agreed by PHE as 99.7% accurate, show 80% fewer cases in Liverpool v. Govt standard PCR tests.

The flawed comparison ignores that the tests are of different people. The post also mistakes the true-negative ratio for ‘accuracy’.

Measuring tests

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Anthony B. Masters

Anthony B. Masters

This blog looks at the use of statistics in Britain and beyond. It is written by RSS Statistical Ambassador and Chartered Statistician @anthonybmasters.