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Table 2 PATH wave 2 definition of product use state

From: The impact of cigarette and e-cigarette use history on transition patterns: a longitudinal analysis of the population assessment of tobacco and health (PATH) study, 2013–2015

Wave 2 product use state Definition
Exclusive cigarette smoking A respondent who was a wave 2 established cigarette smokera AND not a wave 2 established e-cigarette userb
Exclusive e-cigarette use A respondent who was a wave 2 established e-cigarette userb AND not a wave 2 established cigarette smokera
Dual use A respondent who was a wave 2 established cigarette smokera AND was also a wave 2 established e-cigarette userb
Neither A respondent who was neither a wave 2 established cigarette smokera NOR a wave 2 established e-cigarette userb
  1. aA wave 2 established cigarette smoker is defined as a respondent who was smoking cigarette every day or somedays and had smoked 100 or more cigarettes in entire life by wave 2.
  2. bA wave 2 established e-cigarette user is defined as a respondent who was using e-cigarette every day or somedays and had used e-cigarette fairly regularly by wave 2