|
|
Teen |
Teen |
Adult |
Adult |
Joints |
Male |
Female |
Male |
Female |
|
1
|
45.24%
|
46.85%
|
51.65%
|
59.28%
|
|
2
|
22.51%
|
25.00%
|
24.35%
|
18.57%
|
|
3
|
9.74%
|
13.06%
|
10.96%
|
10.76%
|
|
4 or more
|
22.51%
|
15.09%
|
12.87%
|
11.60%
|
Source: National Household Survey on Drug Abuse; Substance Abuse and Mental Health Services Administration (SAMHSA), Department of Health and Human Services; Chen, Kevin, Denise Kandel and Mark Davies. “Relationships between frequency and quantity of marijuana use and last year proxy dependence amng adolescents and adults in the United States.” Drug and Alcohol Dependence, 46 (1997) 43-67.