Correlation between coffee and cigarettes

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This interesting survey from NTTCom Research looked for a correlation between coffee and cigarettes, in particular how visiting coffee shops might increase exposure to second-hand smoke.

In Japan, most coffee chains are smoking, with each chain and each store having their own particular degree of separation between smoking and non-smoking areas. Starbucks are 100% non-smoking, although those with terraces allow outdoor smoking, Tully’s (home-grown fake Starbucks) and Saint Marcs have enclosed smoking areas with air-tight doors, and Becks and Dotour varies from perfect separation to worst than useless. Most independent shops tend to be cancer-donor wards, although once in a while there are exceptions, so check reviews before you enter!

Note that in Q4, the numbers illustrate that this sample had 17.0% non-smokers, 63.3% ex-smokers, and 19.7% smokers. It looks to me as if the ex-smoker and non-smoker percentages have been switched, or that there was some form of pre-screening, but I cannot see anything in the text to say what exactly is happening.

Here’s a typical small privately-owned coffee shop. The owner probably brews an excellent cup of coffee at a wallet-damaging price, but as you can tell from the ashtrays in the photo, there will no doubt be a couple of regulars in a corner smoking the place out:

Roman Coffee Shop, Matsue, Japan
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