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. 2009 Apr 25;39(9):1291–1297. doi: 10.1007/s10803-009-0743-2

Table 1.

Group characteristics and types of substance use disorder in adults with autism spectrum disorder or ADHD

	ASD (N = 76)		ADHD (N = 53)		Test statistic
	N (pct)^a	Mean (SD)	N (pct)	Mean (SD)
Age		34.1 (11.9)		32.1 (11.4)	t₍₁₂₇₎ = 0.960, p = 0.339
Female	14 (18)		18 (34)		, p = 0.044
Total IQ		103.0 (13.6)		104.0 (10.5)	t₍₈₅₎ = −0.364, p = 0.717
Lifetime SUD	21 (28)		32 (60)		, p < 0.001
Alcohol	10 (47)		8 (25)		, p = 0.089
Cannabis	6 (29)		9 (28)		, p = 0.972
Other drugs or gambling	5 (24)		15 (47)		, p = 0.090

^aFigures in N column represent frequency (percent)