Table 3.

Mean scores of CIDI symptom counts for the three-part cluster solution

CIDI symptoms	Low Abuse (n = 175)		Intermediate Abuse (n = 94)		High Abuse (n = 23)		Test statistic
	M	SD	M	SD	M	SD	df	F
Anxietya	7.32a	3.91	9.97b	6.56	9.65ab	6.36	2, 289	9.01**
Affectiveb	1.83a	2.92	5.49b	4.51	4.87b	4.63	2, 289	33.27**
Alcohol symptomsc	1.19a	1.87	1.95b	2.85	3.48c	2.92	2, 289	13.96**
Drug symptomsd	4.37	3.37	5.13	3.57	4.09	3.55	2, 289	1.75
ADHDe	8.68a	5.23	10.42b	5.26	10.17ab	4.78	2, 289	3.74*
CD/ODDf	10.49	3.62	11.18	3.64	11.52	3.76	2, 289	1.62

Note For MANOVA of CIDI symptom count variables by cluster membership, Pillai’s trace=.28, F(12, 570)=7.66, p < .001. Cluster means for CIDI symptom count variables with different letters were significantly different, by Tukey HSD tests with significance levels of .05

^*p < .05;

^**p < .001

^aAbsolute range, 0–30

^bAbsolute range, 0–18

^cAbsolute range, 0–10

^dAbsolute range, 0–11

^eAbsolute range, 0–18

^fAbsolute range, 0–23