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. Author manuscript; available in PMC: 2009 Sep 29.
Published in final edited form as: Drug Alcohol Depend. 2005 Nov 14;83(1):42–48. doi: 10.1016/j.drugalcdep.2005.10.007

Table 1.

Descriptive statistics: means and standard deviations of the Marijuana Ladder at three time points and the percentage of youth who endorsed each stage of change at three time points

Baseline Facility
follow-up (3I)
Community
follow-up (3O)
Mean (standard deviation) 6.13 (3.13) 6.75 (2.94) 6.57 (3.40)
Pre-contemplation (%) 26.2 18.0 24.6
Contemplation (%) 16.4 15.6 13.9
Preparation (%) 28.7 32.0 22.1
Action (%) 14.8 19.7 10.7
Maintenance (%) 13.9 14.7 28.7