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. 2015 Oct 29;16(2):157–165. doi: 10.1016/j.ijchp.2015.09.001

Table 2.

Differences in substance use between adults with and without ADHD.

ADHD (n = 50)
 No ADHD (n = 43)
 Statistic
Substance use (SU) N % N % χ2(1, N=93) p
Alcohol 9 18 1 2.3 5.92 .015*
Tobacco 19 38 4 9.3 10.23 .001*
Marijuana 20 40 6 14 7.79 .005*
Other illegal drugs 9 18 3 7 2.50 .114
*

p < .05