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. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: J Subst Abuse Treat. 2008 Feb 20;35(2):161–173. doi: 10.1016/j.jsat.2007.09.006

Table 1.

Participant demographic and baseline characteristics by site and by treatment group

Site A Site B Site C Site D Site Analysis TAU MET Group Analysis
N=61 N=74 N=55 N=10 X2 or F N=98 N=102 X2 or t
Age (Years) 23.9 (5.0) 27.9 (5.7) 26.6 (4.1) 25.9 (6.8) 10.67** 25.1 (4.8) 27.3 (5.8) 3.02**
Race/Ethnicity (%)+ 20.53** 3.85*
  African-American 39.7 54.4 0.0 55.6 31.1 38.1
  Caucasian 56.9 44.1 15.4 33.3 46.7 33.0
  Hispanic 1.7 1.5 65.4 11.1 14.4 24.7
  Other 1.7 0.0 19.2 0.0 7.8 4.1
Marital Status (%) 13.53** 0.52
  Married 1.6 14.9 23.6 40.0 16.3 12.7
  Separated/Divorced 18.0 18.9 10.9 0.0 15.3 15.7
  Not Married 80.3 66.2 65.5 60.0 68.4 71.6
Education (Years) 11.7 (1.5) 11.2 (1.8) 11.7 (1.7) 10.7 (2.4) 1.58 11.2 (1.4) 11.7 (1.9) 2.33*
Employed Full/Part time (%) 29.5 20.3 25.5 20.0 1.55 27.6 21.6 0.97
Weeks Pregnant 19.1 (7.5) 23.0 (7.8) 19.1 (7.3) 14.9 (7.7) 6.01** 19.9 (7.5) 20.7 (8.2) 0.74
Primary drug used (%)
  Alcohol 11.5 6.8 10.9 30.0 1.05 11.2 9.8 0.11
  Cocaine 8.2 33.8 21.8 50.0 12.72** 17.3 29.4 4.05*
  Marijuana 65.6 21.6 7.3 20.0 51.06** 37.8 24.5 4.10*
  Opiates 8.2 4.1 32.7 0.0 24.25** 12.2 13.7 0.10
  Methamphetamine 4.9 4.1 16.4 0.0 7.67* 6.1 8.8 0.53
  Benzodiazepines 1.6 1.4 0.0 0.0 0.85 1.0 1.0 0.00
  Other 0.0 28.4 10.9 0.0 22.78** 14.3 12.7 0.10
Days of use (past 28) 8.0 (10.8) 6.7 (9.1) 16.0 (12.4) 6.0 (8.5) 13.23** 9.0 (10.9) 10.2 (11.5) 0.44
Need methadone (%) 1.6 2.7 40.0 0.0 48.84** 12.2 12.7 0.01
Pressure to attend treatment (%) 23.0 24.3 1.8 20.0 13.08** 22.4 12.7 3.26

Note. Where not specifically indicated, numbers represent means (standard deviations).

+

Comparisons are for Caucasian to minority participants.

*

p<.05

**

p<.01.