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* 1. What is your first and last name? *

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* 2. What is your email address?

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* 3. Have you ever used an e-cigarette, even once or twice?

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* 4. During the past 30 days, on how many days did you use an e-cigarette?

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* 5. On average, how many times per day did you use an e-cigarette during the past 30 days? If you do not currently use e-cigarettes, please respond “NA”. *

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* 6. On average, how many cartridges/disposables have you used in the past 30 days?

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* 7. What brands of e-cigarettes have you used/are you currently using? LIST ALL E-CIGARETTE BRANDS. If you are not currently using e-cigarettes please respond "NA". *

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* 8. Do you own an e-cigarette?

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* 9. What brand(s) of e-cigarettes do you own? List all e-cigarette brands. If you do not own any e-cigarettes please respond “NA”. *

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* 10. How old were you when you first used e-cigarettes, even one or two puffs?

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* 11. How many traditional cigarettes have you smoked in your entire life? A pack usually contains 20 cigarettes.

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* 12. If you have smoked 100 or more traditional cigarettes (5 packs or more) in your entire life, do you currently smoke cigarettes?

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* 13. If you are a current traditional cigarette smoker, during the past 30 days, on how manydays did you smoke at least one cigarette?

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* 14. If you are a current traditional cigarette smoker, during the past 30 days, on average how many cigarettes per day did you smoke?

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* 15. How old were you when you first started smoking traditional cigarettes?

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* 16. During the past 30 days, have you smoked traditional cigarettes AND used an e-cigarette (i.e. you are a current dual user)?

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* 17. If you answered “Yes” to the previous question (#16), how long have you been a dual user?

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* 18. In the PAST, within any 30 day period, have you ever smoked traditional cigarettes and used an e-cigarette (i.e. former dual user)?

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* 19. If you answered “Yes” to the previous question (#18), how long did your period of dual use last?

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* 20. Please select the description that most closely matches your current status in terms of traditional cigarette and e-cigarette use:

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* 21. Please select the description which most closely matches your traditional cigarette smoking status:

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* 22. During the past 30 days, have you used e-cigarettes at times when or in places where you could not smoke regular cigarettes?

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* 23. What are the reasons you have used e-cigarettes? SELECT ALL THAT APPLY:

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* 24. Is using e-cigarettes less harmful, about the same, or more harmful than smoking traditional cigarettes?

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* 25. How likely is someone to become addicted to e-cigarettes?

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* 26. Please select all of the characteristics which apply to e-cigarette devices you currently use. SELECT ALL THAT APPLY:

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* 27. What concentration of nicotine did you use when you started using e-cigarettes?

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* 28. What concentration of nicotine do you NOW use in e-cigarettes?

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* 29. What type of e-cigarette flavors do you tend to prefer and use? SELECT ALL THAT APPLY:

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* 30. If e-cigarettes were no longer available legally in the US, what would you do?

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* 31. What is your age?

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* 32. To which gender do you most closely identify?

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* 33. What is your race? SELECT ALL THAT APPLY:

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* 34. Are you Hispanic (Latino, Latina, Latino or Latina)?

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* 35. What is the highest grade or level of school you completed?

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