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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Internet Interv. 2014 May 23;1(2):58–64. doi: 10.1016/j.invent.2014.05.001

Figure 2.

Figure 2

Facebook ad campaign reach and recruitment process. Unless otherwise indicated, percentages in each box are the number reported in that box out of the number reported in the box above. Broad targeting included “interests” specified in a Facebook profile including cigarette, tobacco, and smoking. Specific targeting included broad target keywords and additional smoking-related keywords (e.g., nicotine, health effects of tobacco, electronic-cigarette). Excluded participants were either found to be ineligible for reasons listed in the figure or left the online survey before reaching the consent page.