What does it mean if the experimental group in a study had an increased overall risk of brain cancer by 98%?

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Let’s say there were 10,000 people in the study. If 100 people in the control got cancer, does that mean there were 98 more people that got cancer in the experimental group?

If anyone is interested in context, the study I’m referencing is linked [here.](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4602739/#!po=1.28205)

I want to make sure I’m interpreting these results correctly because this seems very high, thank you!

In: Biology

6 Answers

Anonymous 0 Comments

Pretty much, if 100 people in the control group displayed the effect, 198 people in the test group did.

Note it the 98% alone is meaningless without knowing the absolute risk. Going from 10% to 19.8% is huge, going from 1 in a billion to 1.98 in a billion is not.

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