A graph of smoking rates in the UK (Source: ONS Opinions and Lifestyle Survey). Without looking it up, can you mark 2010/11, when vaping really took off?pic.twitter.com/ErqmNSoPsM
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Yep! To be fair, there are very few estimates of smoking that aren't self-reported
Good point.
Off the top of my head I only know one, which is smoking in pregnant women that's sometimes collected by midwives in Aus
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