. Author manuscript; available in PMC: 2009 Aug 10.

Published in final edited form as: Addict Behav. 2006 Nov 13;32(7):1384–1394. doi: 10.1016/j.addbeh.2006.09.010

Table 5.

Summary of stepwise regression results for marijuana related problems as a function of motives.

Step	Predictor	Partial R²	Model R²	F partial
Step 1	Experimentation	0.121	0.121	65.57^***
Step 2	Coping	0.057	0.178	33.25^***
Step 3	Habit	0.022	0.200	12.96^***
Step 4	Altered perception or perspectives	0.010	0.210	6.16^*
Step 5	Enjoyment/fun	0.010	0.220	6.03^*
Step 6	Activity enhancement	0.009	0.229	5.22^*

Note.

^***

p < .001.

p < .05.