. Author manuscript; available in PMC: 2011 Apr 1.

Published in final edited form as: J Dual Diagn. 2010 Apr 1;6(2):94–110. doi: 10.1080/15504261003701445

TABLE 1.

Group Differences of Measures of Substance Use and Abuse

	PTSD (P) n = 30 M (SD)	Depression (D) n = 23 M (SD)	Social phobia (SP) n = 21 M (SD)	Well-adjusted (WA) n = 18 M (SD)	F value	Significant contrasts
Frequency of alcohol consumption	2.27 (1.41)	1.78 (1.24)	1.65 (1.22)	1.72 (1.497)	1.13
No. of drinks per occasion	5.04 (3.29)	3.20 (2.24)	3.58 (3.64)	4.18 (4.23)	1.38	PTSD > D
Typical level of alcohol intoxication	1.67 (0.78)	0.91 (0.79)	1.10 (0.99)	1.00 (1.06)	3.59^*	PTSD > D, SP, WA
Frequency of drug use	0.63 (1.28)	0.48 (1.08)	0.19 (0.40)	0.00 (0.00)	0.506
Frequency of smoking	2.40 (2.25)	1.82 (2.30)	0.62 (1.32)	1.89 (2.27)	3.04^*	PTSD, D, WA > SP
No. of cigarettes per month	118.08 (181.48)	70.00 (159.60)	33.37 (137.30)	61.00 (105.10)	1.15
RAPI total	14.93 (18.22)	9.13 (12.82)	5.05 (6.95)	3.67 (4.28)	3.83^*	PTSD > SP, WA
DAST total	31.00 (4.76)	30.00 (4.06)	29.76 (4.30)	28.61 (1.79)	1.34	PTSD > WA
RTQ total	19.30 (8.36)	15.39 (7.68)	13.14 (6.63)	16.00 (7.70)	2.81^*	PTSD > SP

Note. p < .05

^**

p < .01.

PTSD = post-traumatic stress disorder; RAPI = Rutgers Alcohol Problems Index; DAST = Drug Abuse Screening Test; RTQ = Revised Tolerance Questionnaire.