Figure 1.

Number of warning statements identified in E-cigarette relevant YouTube videos by warning statement category and visual/verbal representation (n = 64).

This figure shows the number of warning statements that were coded as health effects, safety/toxicity, addiction/tobacco, or FDA-mandated warning statements. The bar colors/patterns represent how the warning statement appeared in the video: visually, verbally, or visually and verbally. Videos could have multiple warning statements and several warning statements appeared in multiple videos. However, each individual warning statement was assigned to a single warning statement category and we reported its visual/verbal representation.