Fig. 2
From: News events and their relationship with US vape sales: an interrupted time series analysis
Vape sales scatterplot and trends with a timeline of vaping-related news events. (a) August 17 2019: CDC announces investigation into vaping-related illnesses (b) September 11 2019: Trump administration considers ban on some flavored vaping products (c) October 4 2019: FDA warns against using vape products containing THC (d) November 8 2019: CDC announces relationship between Vitamin E acetate and lung injury outbreak Note. Association between vape sales and exposure to news events. The solid line indicated the smoothed weekly vape sales with the corresponding confidence interval (in grey) and was obtained by fitting the date of the vape sales to the amount of vape sales using an interrupted time series design with segmented regression analysis. Red boxes denoted news events that had statistically significant association (p < 0.05) with shifts in vape sales