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. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: Addict Behav. 2018 Feb 27;82:122–128. doi: 10.1016/j.addbeh.2018.02.032

Table 2. Comparison of Past-Month and Lifetime Substance Use by Gender, School, and Age.

Overall sample (n=347) Female (n=226) Male (n=119) Community college (n=237) University (n=110) 18-25 years (n=178) 26 years + (n=169)
Variable n (%) n (%) n (%) p-value n (%) n (%) p-value n (%) n (%) p-value
Past-month alcohol use
 Any alcohol 150 (43.2) 95 (41.9) 55 (46.2) .493 96 (40.5) 54 (49.1) 0.162 80 (44.9) 70 (41.4) .517
 Binge drinking 92 (26.6) 57 (25.2) 35 (29.4) .443 59 (25.0) 33 (30.0) 0.361 51 (28.8) 41 (24.3) .394
Past-month drug use
 Drug usea 69 (20.2) 40 (17.9) 29 (24.8) .156 47 (20.3) 22 (20.0) 1.00 39 (22.0) 30 (18.3) .420
 Marijuana 46 (13.6) 26 (11.7) 20 (17.4) .180 31 (13.5) 15 (13.6) 1.00 31 (18.1) 14 (8.6) .011
 Prescription opioids, non-medical reasons 15 (4.4) 6 (2.7) 9 (7.6) .050 10 (4.3) 5 (4.5) 1.00 5 (2.8) 10 (6.1) .187
Lifetime substance use
 CAGE-AID score of 2 or more 129 (37.8) 68 (30.5) 61 (52.1) .000 100 (42.7) 29 (27.1) .006 47 (26.9) 82 (49.4) .000
 Drug usea in any category >100× 74 (22.3) 39 (18.1) 35 (30.4) .013 59 (26.1) 15 (14.2) .016 27 (15.7) 47 (29.4) .004
Current tobacco use
 Everyday 17 (4.9) 7 (3.1) 10 (8.4) .015 15 (6.4) 2 (1.9) .103 6 (3.4) 11 (6.6) .002
 Some days 27 (7.8) 12 (5.4) 15 (12.6) 20 (8.5) 7 (6.5) 13 (7.3) 14 (8.4)
 Former smoker 34 (9.9) 20 (8.9) 14 (11.8) 21 (8.9) 13 (12.0) 10 (5.6) 24 (14.4)
 Smoked in past, not former smoker 97 (28.2) 68 (30.4) 29 (24.4) 73 (30.9) 24 (22.2) 50 (28.2) 47 (28.1)
 Never 99 (28.8) 72 (32.1) 26 (21.8) 60 (25.4) 39 (36.1) 66 (37.3) 33 (19.8)
 Ceremonial use only 70 (20.3) 45 (20.1) 25 (21.0) 47 (19.9) 23 (21.3) 32 (18.1) 38 (22.8)

Note. Differences between groups tested using chi-square test; results significant at p < .05 level are bolded.

a

Drugs included marijuana, cocaine, methamphetamine, inhalants, sedatives/sleeping pills, hallucinogens, heroin/opium, prescribed stimulants or prescription opioids/painkillers for non-medical reasons.