Because, as they say in the paper, the data only say a foreign body was removed - not what sort it was. However, a different study showed that 75% of incidents

Because, as they say in the paper, the data only say a foreign body was removed - not what sort it was. However, a different study showed that 75% of incidents in kids under 6 was due to coins. Given that the change appears to coincide with the UK's move to cashless, it is a reasonable assumption. Although they do note the limits of their conclusion. https://publishing.rcseng.ac.uk/doi/full/10.1308/rcsann.2024.0050 https://publishing.rcseng.ac.uk/doi/full/10.1308/rcsann.2024...