Defining Adult E-Cigarette Prevalence: Comparing a Categorical Definition with Days of Use.
Friday, August 14, 2020
Posted by: Natalia Gromov
Boyle RG, Richter S, St.
Claire AW.
Defining Adult
E-Cigarette Prevalence: Comparing a Categorical Definition with Days of Use.
Tobacco Control. Published Online First: 16 July 2020. doi:
10.1136/tobaccocontrol-2020-055641
Introduction
Electronic cigarette use has grown substantially and the health effects are
being closely monitored. Tracking the evolving market place and the profile of
adult users is important for tobacco control efforts; however, several
different ways of measuring current use have been reported. This paper examines
how well a categorical definition aligns with days of use.
Methods
Data from the 2018 Minnesota Adult Tobacco Survey assessed e-cigarette use
based on days of use in the past month and currently using ‘every day, some
days, or not at all’. Prevalence of current use and agreement of >1, >5
and >20 days of use with every day or some days were calculated.
Results The
prevalence of e-cigarette use varied by category of use from 2.4% (≥20 days/30)
to 6.0% (≥1 day/30). The highest prevalence was found among young adults
reporting any use in the past 30 days (21.9%). Never smokers had low prevalence
overall; however, 4.4% reported using in the past 30 days. Using at least 1 day
in the past 30 days included a higher proportion of young adults (p<0.001)
and never smokers (p<0.001) compared with other current use categories.
Compared with every day or some days, the per cent agreement with days of use
categories ranged from 89.7% to 94.4% and kappa ranged from 0.60 to 0.81.
Conclusions
Prevalence and sociodemographics varied by definition of use. Asking ‘every
day, some days or not at all’ in population-based studies has the advantage of
aligning with cigarette smoking current use definition.
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