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Hannah Fry on using shopping data to detect ovarian cancer
The British mathematician discusses a new study that suggests loyalty card data could be used to pick up early signs of cancer.
A new study led by Imperial College in London suggests that data from loyalty card spending in supermarkets and pharmacies could be used as a way of detecting ovarian cancer much earlier. Tim Harford discusses the findings with Professor Hannah Fry, who was most recently on the show talking about her own experience with cancer.
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More or Less: Behind the Stats
Tim Harford investigates numbers in the news: are they always reliable?
