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. Author manuscript; available in PMC: 2020 Jul 15.
Published in final edited form as: Subst Use Misuse. 2019 Jul 15;54(13):2156–2166. doi: 10.1080/10826084.2019.1638407

Table 1.

Demographic Frequencies of Final Analytic Sample

Variable Total
(n=1017)
n (%)
Alcohol-Only Users
(n=432)
n (%)
SAM Users
(n=585)
n (%)
df χ2
Sex 1 159.88*
 Male 690 (67.8) 200 (46.3) 490 (83.8)
 Female 327 (32.2) 232 (53.7) 95 (16.2)
Ethnicity 5 155.25*
 Caucasian/White 727 (71.5) 220 (50.9) 507 (86.7)
 African American/Black 145 (14.3) 94 (21.8) 51 (8.7)
 Native American/Indian 57 (5.6) 44 (10.2) 13 (2.2)
 Asian/Pacific American 51 (5.0) 46 (10.6) 5 (0.9)
 Hispanic/Latino 55 (5.4) 32 (7.4) 23 (3.9)
 “Other” 9 (0.9) 5 (1.2) 4 (0.7)
Employment 3 173.22*
 Full-time only 176 (17.3) 131 (30.3) 45 (7.7)
 Part-time only 546 (53.7) 140 (32.4) 406 (69.4)
 Part-time and full-time 92 (9.0) 34 (7.9) 58 (9.9)
 Unemployed 201 (19.8) 127 (29.4) 74 (12.6)
Highest grade completed 3 176.50*
 < high school 34 (3.3) 25 (5.8) 9 (4.0)
 GED/high school diploma 220 (21.7) 156 (36.1) 64 (10.9)
 Some college/college 713 (70.1) 209 (48.4) 504 (86.2)
 Graduate school 48 (4.7) 42 (9.7) 6 (1.0)
Current College Enrollment 1 88.51*
 Yes 609 (59.9) 186 (43.1) 423 (72.3)
 No 408 (40.1) 246 (56.9) 162 (27.7)
Relationship Status 4 41.29*
 Single/never married 866 (85.2) 371 (85.9) 495 (84.6)
 Living with partner 92 (9.0) 19 (4.4) 73 (12.5)
 Married 38 (3.7) 30 (6.9) 8 (1.4)
 Widowed 1 (0.1) 1 (0.2) 0
 Separated/divorced 18 (1.8) 10 (2.3) 8 (1.4)
Living Situation 4 80.40*
 Parent’s or relative’s home 388 (38.2) 181 (41.9) 207 (35.4)
 College dorm/residence hall/apartment 319 (31.4) 74 (17.1) 245 (41.9)
 House/apartment/room (not college-affiliated) 302 (29.7) 174 (40.3) 128 (21.9)
 Fraternity/sorority house 3 (0.3) 2 (0.5) 1 (0.2)
 Other 3 (0.3) 1 (0.2) 2 (0.3)
M (SD) M (SD) M (SD) df t
Age 21.66 (1.76) 22.11 (1.84) 21.32 (1.62) 1014 7.21*

Note. SAM = simultaneous alcohol and marijuana (within past year). Does not include missing values.

*

p < .001