A colleague sent me an email about my math. You’re more or less right, he said, but you need to account for the false positives.

I agree with him. (It’s true.)

The problem is, among others, how to present those numbers in the press.

Statistics don’t sell; still, an explanation is due.

In my next full post I’ll consider the meaning of false positives  – their significance and costs –  in the cancer screening debate.

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