A new classification system for describing concurrent use of nicotine vaping products alongside cigarettes (so-called 'dual use'): findings from the ITC-4 Country Smoking and Vaping wave 1 Survey

Abstract

AIMS: To determine whether a simple combination of level of smoking and level of vaping results in a useful typology for characterizing smoking and vaping behaviours. METHODS: Cross-sectional data from adults (≥ 18 years) in the 2016 wave 1 ITC Four Country Smoking and Vaping Survey in the United States (n = 2291), England (n = 3591), Australia (n = 1376) and Canada (n = 2784) were used. Participants who either smoked, vaped or concurrently used both at least monthly were included and divided into eight groups based on use frequency of each product (daily, non-daily, no current use). This resulted in four concurrent use groups (predominant smokers, dual daily users, predominant vapers and co..