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Table 1 Proxy cannabis dependence questions

From: Negative consequences associated with dependence in daily cannabis users

1. Do you use cannabis much more often or in greater amounts than you intended?
2. Did you want to or try to cut down on your cannabis use but find that you could not?
3. Did your cannabis use keep you from going to work or school, or engaging in recreational activities?
4. Have you experienced a month or more of spending a great deal of time getting cannabis, using it, or recovering from its effects?
5. Did cannabis cause you emotional or psychological problems, such as feeling uninterested in things, feeling depressed, feeling suspicious, feeling paranoid, or having strange ideas?
6. Have you developed a tolerance to cannabis so that the same amount of drug had less effect than before?
7. Has cannabis caused you to experience withdrawal symptoms?