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Table 1 Cross Classifications of E-Cigarette and Cigarette Use

From: Socioeconomic patterning of vaping by smoking status among UK adults and youth

 

Cigarette Usea

Never Smoker

Ex-Smoker

Current Smoker

E-Cigarette Use

Non-Vaperb

Non-Users

Ex-Smoker who does not vape

Smoker who does not vape

Vaper

Vaper who has never smoked

Ex-Smoker who vapes

Dual-Use

  1. aFor youth, considering low prevalence, ex-smokers and current smokers were combined into a single category of ever-smokers
  2. bNon-vaping includes ex and never vapers as we did not think it important to distinguish these categories for our purposes here
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BMC Public Health

ISSN: 1471-2458

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