- Have you ever used nitrous oxide?*
- How often do you use nitrous oxide?*
- In what settings have you used nitrous oxide? (Select all that apply)*
- What method(s) have you used to inhale nitrous oxide? (Select all that apply)*
- Please indicate your level of agreement with the following statements about nitrous oxide:*
- Have you experienced or witnessed any negative effects from nitrous oxide use?*
- Do you take any safety precautions when using nitrous oxide? (Select all that apply)*
- Should be Empty: