Promotion of Health-Harming Products on Instagram: Characterizing Strategies Boosting Audience Engagement with Cigar Marketing Messages.

Thus, there was a decreasing trend in the number of CLCC posts over time (slope = −31.6; intercept = 6030.0; p -value < 0.001), with notable small spikes around 20 April (or “4/20” in the U.S.)—a date associated with cannabis culture that appears to drive cross-promotion of tobacco products—every year during the period of observation ( Figure 1 ).

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