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. Author manuscript; available in PMC: 2018 Dec 13.
Published in final edited form as: Demography. 2018 Oct;55(5):1979–1999. doi: 10.1007/s13524-018-0715-2

Table 2.

Age and educational attainment within Facebook and LinkedIn: U.S. data only

Website Age
Interval		 Total
Population		 Population With a
College Degree		 Degree
Rate		 Proportion of Users
in Age Interval
LinkedIn 18–24 9,200,000 6,400,000 .696 .190
LinkedIn 25–34 16,000,000 9,600,000 .600 .330
LinkedIn 34–54 16,000,000 9,800,000 .613 .330
LinkedIn 55+ 7,300,000 3,900,000 .534 .151
Facebook 18–24 39,000,000 8,600,000 .221 .171
Facebook 25–34 60,000,000 23,000,000 .383 .263
Facebook 34–54 81,000,000 28,000,000 .346 .355
Facebook 55+ 48,000,000 16,000,000 .333 .211

Notes: Contribution of age compositional differences = –0.0032. Contribution of rate schedule differences = –0.2776. Proportion of total contribution attributable to difference in age composition = 0.0113. Proportion of total contribution attributable to differences in rate schedules = 0.9887.