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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: Drug Alcohol Depend. 2016 Feb 6;161:135–146. doi: 10.1016/j.drugalcdep.2016.01.032

Table 2.

Demographic and Drug Use Characteristics by Persistent and Desistent ADHD and LNCG Groups.

LNCG
(n=39)
Mean (SD) or %
Desistent ADHD
(n=23)
Mean (SD) or %
Persistent ADHD
(n=52)
Mean (SD) or %
Age* 23.5 (1.4) 24.6 (1.2) 24.3 (1.3)
% Male 76% 91% 81%
% Caucasian 67% 61% 58%
IQ 108.2 (23.0) 104.6 (15.5) 102.6 (15.3)
% Current ADHD meds 0% 4% 8%

Cannabis use onset
(CUO) age
16.6 (2.9) 15.4 (3.6) 15.6 (2.8)
% Early CUO (<16 yo) 40% 50% 48%
% Past year daily
cannabis use
26% 26% 25%
Days used cannabis past
month
9.3 (11.7) 3.6 (6.3) 8.4 (12.0)
% 0 yrs regular cannabis
use
49% 56% 42%
% 2> yrs regular cannabis
use
15% 13% 21%

% Smoke Cigarettes 26% 30% 44%
Age Regularly Drank
Alcohol
18.7 (1.9) 19.0 (2.1) 18.3 (2.9)
Past Year Binge Episodes 1.7 (2.8) 4.5 (2.5) 3.6 (2.5)

Notes:

*

p<.05, see text for details.