Table 1.

Demographics

	Genes for Gooda	US Populationb	Facebook-Using Populationc
Age
Median, years	33	44d
18–24	17.0%	13.2%	19.5%
25–34	37.1%	17.1%	27.0%
35–44	21.6%	16.4%	19.6%
45–54	11.9%	18.3%	16.5%
55+	12.4%	35.5%	17.4%
Sex
Male	25.9%	49.2%	49%
Female	74.1%	50.8%	51%

^aData source for our study data is based on all valid responses as of August 9^th, 2017

^bData for US population from the 2010 U.S. Census⁵¹

^cData for Facebook population from Statistica (see Web Resources)

^dMedian age of US persons over age 18 reported in the US 2010 Census