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. Author manuscript; available in PMC: 2010 May 11.
Published in final edited form as: Crim Justice Behav. 2009;36(9):935–953. doi: 10.1177/0093854809338769

Table 1. Background Variables of Participants in Each of the Study Conditions.

Variable Study Condition p*

Standard n=37 Drug Testing n=35 Treatment Plan n=34 Combined n=30
Gender, % women 16.2 20.0 32.4 10.0 0.14
Ethnicity, % 0.72
 White 46.0 57.1 61.8 56.8
 Hispanic 51.4 37.1 32.4 40.0
 African American 2.7 5.7 2.9 3.3
 Other 0.0 0.0 2.9 0.0
Marital status, % never married 51.4 62.9 47.1 56.7 0.58
Living situation, % with parents, relatives, or friends 63.2 66.7 64.7 58.1 0.90
Primary drug, % methamphetamine 76.3 80.6 88.2 83.9 0.71
Injection of drugs in past 30 days, % Yes 2.6 0.0 2.9 0.0 0.59
Age, mean years (SD) 31.7 (8.0) 32.6 (8.6) 31.8 (8.6) 33.0 (9.9) 0.91
Education, mean years (SD) 11.8 (1.1) 12.2 (1.0) 11.8 (1.9) 12.1 (1.5) 0.70
Employed in past 30 days, mean days (SD) 9.6 (10.3) 8.4 (9.9) 8.9 (9.6) 10.8 (10.5) 0.79
BSI Global Severity Index, mean (SD) 0.3 (0.4) 0.5 (0.8) 0.2 (0.4) 0.2 (0.3) 0.04
Age of first use of any illicit drug, mean years (SD) 11.9 (3.6) 12.5 (3.9) 13.1 (3.5) 12.2 (2.7) 0.55
Use of primary drug, mean years (SD) 9.0 (6.7) 7.8 (5.5) 9.0 (7.3) 8.7 (5.8) 0.85
Prior arrests, mean (SD) 6.7 (4.0) 6.7 (4.1) 6.4 (5/1) 7.8 (5.2) 0.60
Prior incarceration, mean months (SD) 8.4 (11.6) 9.9 (17.3) 16.8 (37.0) 24.8 (36.5) 0.06
*

Based on ANOVA for continuous variables and on chi-square for categorical variables.