. Author manuscript; available in PMC: 2012 Apr 1.

Published in final edited form as: Exp Clin Psychopharmacol. 2011 Apr;19(2):173–181. doi: 10.1037/a0023031

Table 3.

Brief Symptom Inventory (BSI) scales and Addiction Severity Index (ASI) individual items based on age category

Variable	Age 18-29	Age 30-39	Age ≥ 40	Statistical test, p value
BSI Scales
Obsessive-compulsive	1.23 (0.13)	1.30 (0.11)	1.05 (0.12)	F (2,385) = 2.85, p = 0.06
Depression^*	1.08 (0.13)_ab	1.26 (0.11)_a	0.92 (0.13)_b	F (2,385) = 3.67, p = 0.03
Paranoid Ideation^*	1.21 (0.12)_a	1.19 (0.10)_a	0.88 (0.11)_b	F (2,385) = 5.99, p = 0.003
Psychoticism^*	1.05 (0.12)_ab	1.15 (0.10)_a	0.87 (0.11)_b	F (2,385) = 4.51, p = 0.01
Interpersonal-sensitivity^*	0.98 (0.14)_ab	1.19 (0.11)_a	0.92 (0.13)_b	F (2,385) = 3.42, p = 0.03
Anxiety	0.98 (0.12)	1.13 (0.10)	1.02 (0.11)	F (2,385) = 1.19, p = 0.31
Phobic anxiety	0.82 (0.11)	0.92 (0.09)	0.72 (0.10)	F (2,385) = 2.68, p = 0.07
Hostility^*	0.84 (0.11)_a	0.81 (0.09)_a	0.52 (0.10)_b	F (2,385) = 6.27, p = 0.002
Somaticism	0.69 (0.10)	0.72 (0.08)	0.71 (0.09)	F (2,385) = 0.05, p = 0.95
ASI Medical Items
Days of medical problems in past month^*	2.5 (1.5)_a	5.2 (1.2)_ab	7.1 (1.3)_b	F (2,385) = 4.40, p = 0.01
Times hospitalized for medical problems	5.9 (1.5)	2.6 (1.3)	3.34 (1.4)	F (2,385) = 2.40, p = 0.09
Any chronic medical problems (no.,%)^*	14 (20.0)_a	56 (30.1)_a	60 (43.8)_b	X²(2) = 13.26, p = 0.001
Any medication taken regularly (no.,%) ^*	13 (18.6)_a	47 (25.3)_a	50 (36.5)_b	X²(2) = 8.68, p = 0.01
ASI Legal Items
Days of illegal activities in past month^*	1.1 (0.4)_a	0.1 (0.3)_b	0.2 (0.3)_b	F (2,385) = 4.32, p = 0.01
On probation or parole (no., %)	23 (32.9)	43 (23.1)	36 (26.3)	X²(2) = 2.52, p = 0.28
Presently waiting for charges (no.,%)	21 (30.0)	32 (17.2)	28 (20.4)	X²(2) = 5.09, p = 0.08

Groups differ, p<.05.

Values represent adjusted means and standard errors unless otherwise noted.

Different subscripts represent groups that differ significantly (p<.05) using Student Newman Keuls tests.