Appendix Table 1.

Cannabis Use Survey Items

Reasons for and modes and helpfulness of marijuana/cannabis use among survey participants who used it in the past 30 days
1. When you used marijuana/cannabis during the past 30 days, was it:	For medical reasons
	For non-medical reasons
	Both medical and non-medical reasons
2. During the past 30 days, how did you use marijuana/cannabis? (Select all that apply.)	Smoke it (for example, in a joint, bong, blunt, spliff or pipe)
	Vaporize it (for example, hash oil in an e-cigarette-like vaporizer, vape pen or another vaporizing device)
	Dab it (for example, using waxes or concentrates in a dab rig or other dabbing device)
	Eat it (for example, in brownies, cakes, cookies, or candy)
	Drink it (for example, in a tincture, tea, cola, or alcohol)
	Apply it to skin (for example, lotion, ointment, patch, or salve)
	Use it some other way (please list):
3. During the past 30 days, how did you use marijuana/cannabis most often?	AUTOFILL modes of use [smoke/vaporize/dab/eat/drink/apply/use it some other way] selected:
	▫ … ▫ … ▫ … ▫ …

	[LOGIC RULE: Allow one checked reason]
4. During the past 30 days, have you used marijuana/cannabis to help you manage any of the following: (Select all that apply.)	[yes/no] Pain
	[yes/no] Muscle spasm
	[yes/no] Seizures
	[yes/no] Nausea or vomiting
	[yes/no] Sleep
	[yes/no] Stress
	[yes/no] Appetite
	[yes/no] Worry or anxiety
	[yes/no] Depression or sadness
	[yes/no] Focus or concentration
	Other symptoms (please specify):
	None of the above
5. Please check the reason you used marijuana/cannabis most often during the past 30 days.	AUTOFILL reasons checked (in previous question):
	▫ … ▫ … ▫ … ▫ …
	[LOGIC RULE: Allow one checked reason]
6. During the past 30 days, how helpful has marijuana/cannabis been for [reason used most often during the past 30 days]?	Extremely helpful
	Very helpful
	Somewhat helpful
	Slightly helpful
	Not at all helpful
	[LOGIC RULE: SKIP if no reason for use selected]

Typical marijuana/cannabis use among survey participants who used marijuana/cannabis in the past 30 days, by ways they used it
These next questions ask about your typical marijuana/cannabis use. You said that in the past 30 days, you used marijuana/cannabis in the following way(s):
[AUTOFILLED for questions if ‘Smoke it’, ‘Vaporize it’, ‘Dab it’, ‘Eat it’, ‘Drink it’, ‘Apply it to skin’, ‘Use it some other way’ endorsed]
7. How many days per week do you typically [smoke/vaporize/dab/eat/drink/apply it/use marijuana/cannabis in another way]?	Less than 1
	1
	2
	3
	4
	5
	6
	7
8. On a typical day that you [smoke/vaporize/dab/eat/drink/apply marijuana/cannabis/use marijuana/cannabis in another way], how many times per day do you [smoke/vaporize/dab/eat/drink/apply/use] it?	Less than 1
	1 to 2
	3 to 4
	5 to 9
	10 to 14
	15 to 19
	20 or more
[AUTOFILLED for questions if ≥ 2 modes of use selected]
Now consider all the ways you use marijuana/cannabis…
9. How many days per week do you typically use any marijuana/cannabis?	Less than 1
	1
	2
	3
	4
	5
	6
	7
10. On a typical day that you use any marijuana/cannabis, how many times per day do you use it?	Less than 1
	1 to 2
	3 to 4
	5 to 9
	10 to 14
	15 to 19
	20 or more

Symptoms of cannabis use disorder in the past year
11. In the past year, did you ever need larger amounts of marijuana/cannabis to get an effect, or did you ever find that you could no longer get high on the amount you used to use?	Yes
	No
12. Was there ever a time in the past year when you stopped, cut down, or went without using marijuana/cannabis and then experienced withdrawal symptoms?	Yes No
Withdrawal symptoms can include cravings for marijuana/cannabis, irritability, restlessness, anxiety, depression and other mood changes, sleeplessness, sweating, appetite loss, and headaches.
13. Was there ever a time in the past year when you used marijuana/cannabis to keep from having withdrawal symptoms?	Yes
Withdrawal symptoms can include cravings for marijuana/cannabis, irritability, restlessness, anxiety, depression and other mood changes, sleeplessness, sweating, appetite loss, and headaches.	No
14. Were there times in the past year when you tried to stop or cut down on your use of marijuana/cannabis and found that you were not able to do so?	Yes
	No

Symptoms of cannabis use disorder in the past year, continued
15. Was there ever a time in the past year when you often had such a strong desire to use marijuana/cannabis that you couldn’t stop using or found it difficult to think of anything else?	Yes
	No
16. Did you ever have times in the past year when you used marijuana/cannabis even though you planned not to or when you used a lot more than you intended?	Yes
	No
17. Were there times in the past year when you used marijuana/cannabis more frequently or for more days in a row than you intended?	Yes
	No
18. In the past year, did you ever have several days or more when you spent so much time using or getting over the effects of marijuana/cannabis use that you had little time for anything else?	Yes
	No
19. In the past year, did you ever continue to use marijuana/cannabis when you knew you had a serious physical or emotional problem that might have been caused by or made worse by using marijuana/cannabis?	Yes
	No
20. Was there ever a time in the past year when your use of marijuana/cannabis frequently interfered with your work or responsibilities at school, on a job, or at home?	Yes
	No
21. Was there ever a time in the past year when your use of marijuana/cannabis caused arguments or other serious or repeated problems with your family, friends, neighbors, or co-workers?	Yes
	No
22. Did you continue to use marijuana/cannabis even though it caused problems with these people?	Yes
	No
23. Were there times in the past year when you were often under the influence of marijuana/cannabis in situations where you could have gotten hurt – for example when riding a bicycle, driving, operating a machine, or anything else?	Yes
	No
24. In the past year, were there times when you experienced strong desires or cravings to use marijuana/cannabis?	Yes
	No
25. In the past year, was there ever a time when you gave up or greatly reduced important activities because of your marijuana/ cannabis use – for example, sports, work, or seeing friends and family?	Yes
	No

Tobacco/nicotine product use, employment, and education
26. Have you ever smoked at least 100 cigarettes in your entire life?	Yes
	No
	Don’t know
If Yes: Do you now smoke cigarettes…..?	Every day
	Some days
	Not at all/never
	Don’t know
27. Have you ever used an e-cigarette or other electronic vaping product for tobacco/nicotine, even just one time, in your entire life?	Yes
	No
	Don’t know
If Yes: Do you now use e-cigarettes or other electronic ‘vaping’ products for tobacco/nicotine?	Every day
	Some days
	Not at all/never
	Don’t know
28. What best describes your current employment? Please check the best response.	Employed full time (includes self-employed)
	Employed part time (includes self-employed)
	In school or vocational training
	Retired
	Home maker
	Unemployed, laid-off or looking for work
	Disabled or unable to work for health reasons
	Other [SPECIFY: ]

Tobacco/nicotine product use, employment, and education, continued
29. What is the highest grade or level of school that you completed?	8^th grade or less
	Some high school, but not a graduate
	High school graduate or GED
	Some college or 2-year degree
	4-year college degree
	More than 4-year college degree