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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: Addict Behav. 2015 Oct 31;53:196–200. doi: 10.1016/j.addbeh.2015.10.021

Table 1.

Means and Standard Deviations of Marijuana Use Variables

Baseline (n = 72) 3-Months (n = 62) 9-Months (n = 63)
Marijuana Use Variables
 Proportion of Days
  Marijuana Used		 .88 (.17) .39 (.36)** .46 (.37)**
 Use Disorder Symptoms 7.43 (1.62) 4.05 (2.85)** 4.27 (3.39)**
 Marijuana Problems 10.10 (3.93) 5.58 (5.06)** 5.98 (5.24)**
Readiness to Change 26.84 (7.72) 33.71 (5.92)**
GCOS Scales
 Autonomy 68.81 (7.42) 68.90 (8.36)
 Controlled 51.65 (8.67) 50.94 (9.39)
 Impersonal 38.90 (12.85) 38.35 (12.12)

Note: Asterisks represent significant change in variable from baseline to follow-up

**

p<.01,

*

p<.05