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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 2.

Correlations of the ML with Timeline Follow-back marijuana use indices at two different time points

Marijuana Ladder Marijuana use index Correlation (r)
Quantity −.24*
Baseline Frequency −.17
Intensity −.23*
Three-month follow-up post-release Quantity −.54*
Frequency −.62*
Intensity −.24*
*

Significant at α ≤ .01.