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. Author manuscript; available in PMC: 2021 Jun 1.
Published in final edited form as: Addict Behav. 2020 Jan 21;105:106290. doi: 10.1016/j.addbeh.2020.106290

Table 1.

Demographic Characteristics of the Sample

UNC Fall 2014 Undergraduates
Pooled Sample
N = 18,350
N = 1534
Gender N % N %


 Male 7,763 42.3 617 40.2
 Female 10,587 57.7 917 59.8
Age
 18 3,739 20.4 253 16.6
 19 4,100 22.3 366 24.0
 20 4,217 23.0 337 22.1
 21 3,928 21.4 394 25.8
 22 776 4.2 160 10.5
 23 257 1.4 18 1.2
Race/Ethnicity
 Hispanic – Any Race 1,351 7.4 98 6.4
 American Indian or Alaska Native 6 0.4
 Asian 1,717 9.4 180 11.8
 Black/African-American 1,543 8.4 226 14.8
 White/Caucasian 11,903 64.9 1012 66.1
 Two or More Races 776 4.2 82 5.4
 Other/Unknown 460 2.5 24 1.6
Classification
 First-Year 4,397 24.0 378 24.6
 Sophomore 3,909 21.3 360 23.5
 Junior 4,578 24.9 343 22.4
 Senior 5,024 27.4 453 29.5


Mean SD Mean SD


Cumulative GPA 3.17 3.29 0.472

Note: UNC = University of North Carolina, Chapel Hill. The race/ethnicity classifications used in the current study are different from those used by UNC’s Office of Institutional Research and Assessment as described in the Measures section.