Table 2.

Characteristics of an 18-day Facebook-targeted advertisement campaign with Facebook-advertising metrics (N=331).

Variable		Reach	Unique Clicks to Website	Spent (cost per click)
Total Facebook users and budget		56,621	1121	$500
Advertisement placement
	Desktop right side	4527	22	$0.32
	Desktop newsfeed	7409	190	$0.30
	Mobile newsfeed	42,059	894	$0.48
	Audience networka	1015	7	$0.11
Gender
	Women	35,581	722	$0.48
	Men	20,269	378	$0.40
	Unspecified	772	21	$0.29
Age, years
	55-64	31,004	602	$0.44
	65+	25,617	519	$0.46

^aAudience network refers to individuals who saw advertisement on Facebook page (Healthy Lungs Initiative).