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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