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Abstract:
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The UpSet plot is a convenient tool to demonstrate frequencies and percentages for intersection of multiple sets, e.g., the percentage of e-cigarette users who choose e-cigarettes over the regular cigarettes due to all these reasons: (1) e-cigarettes can be used in places where smoking is banned, (2) use of e-cigarettes is less harmful to user’s health and (3) health of people around, and (4) e-cigarettes aid in smoking cessation among dual users (users of e- and regular cigarettes). The UpSet plot can be conveniently constructed in R but is not suitable for survey data collected via complex sampling. We illustrate how one can construct the UpSet plots of weighted frequencies and relative weighted frequencies (percentages) using SAS® Survey Package and R UpSetR Package. To illustrate the approach, we constructed the plots for perceived reasons for e-cigarette use (stated above). The data source was the Tobacco Use Supplement to the Current Population Survey. The UpSet plots illustrated that among different combination of reasons for e-cigarette use, most commonly, e-cigarette users reported all four reasons simultaneously (35%), followed by reasons 2, 3 and 4 simultaneously (23%).
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