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Table 2 Variable Definitions and Reliability Scores

From: African-American crack abusers and drug treatment initiation: barriers and effects of a pretreatment intervention

Measure Definition Response Category Chronbach alpha
Treatment Motivation    
Problem Recognition Awareness of drug problems as measured by items adapted from the Problem Recognition scale of the TCU Motivation for Treatment Scales [38] 9 items Yes = 1, No = 0 0.82
Desire for Help Awareness of intrinsic need for change in drug use and interest in getting help is measured by items adapted from the Desire for Help scale of the TCU Motivation for Treatment Scale [38] 7 items Yes = 1, No = 0 0.72
Treatment Resistance Perception of difficulties in being in treatment and resisting use [37] 4 items Yes = 1, No = 0 0.47
Lifetime Treatment Episodes Reported number of times been to treatment in lifetime 1 item Continuous  
Readiness for Treatment Desire to go to drug treatment, and how soon individual would want to go 2 items Precontemplation = Do no want to or want to go 6+ months from now Contemplation = Want to go 1–6 months from now Preparation = Want to go in next 30 days  
Readiness to Change Alcohol Use Desire to change alcohol use 2 items (same categories as above)  
Readiness to Change Crack Use Desire to change crack use 2 items (same categories as above)  
Years of Crack Use Number of years since first crack use to baseline 1 item Continuous  
Psychological Functioning    
Depressive Symptoms Significant problems with depressive symptoms reported in the past 90 days adapted from the GAIN Depressive Symptoms Scale [37] 5 items Yes = 1, No = 0 0.88
Anxiety Significant problems with symptoms of anxiety reported in the past 90 days adapted from the GAIN Anxiety Symptom Index [37] 3 items Yes = 1, No = 0 0.77