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Table 2 Comparison of cannabis dependent and non-dependent participants on indices of cannabis use and related problems

From: Negative consequences associated with dependence in daily cannabis users

Index

Dependent

Non-Dependent

 
 

n

Mean (SD)

n

Mean (SD)

t

Joints/Week

1083

16.58 (15.18)

1743

14.14 (13.61)

-4.32*

Cannabis/Month

1105

4.75 (2.09)

1764

4.18 (2.13)

-7.09*

Average High

1107

4.06 (1.23)

1762

3.51 (1.28)

-11.35*

Maximum High

1109

5.47 (1.03)

1763

4.95 (1.37)

-11.59*

Alcohol Drinks/Occasion

1109

4.97 (4.40)

1766

3.28 (3.64)

-10.68*

Alcohol Drinks/Week

1109

11.49 (17.61)

1768

7.30 (14.22)

-6.68*

Respiratory Problems

1111

1.28 (1.33)

1770

0.77 (1.12)

-10.61*

Cannabis-Related Problems

1111

12.08 (11.00)

1770

4.21 (5.54)

-22.14*

Happiness

1105

15.25 (3.71)

1756

16.23 (3.47)

7.01*

Satisfaction With Life

1109

18.92 (5.45)

1758

19.89 (5.28)

4.69*

Motivation

1092

49.60 (4.70)

1753

51.56 (4.03)

11.44*

Depression

1059

13.23 (9.69)

1700

8.45 (8.19)

-13.35*

  1. *p < .001