| Item | Measured Aspects of Prevention Optimism |
| How likely do you think it is that you will become HIV positive?a | Individual’s perceived risk of HIV infection |
| Because of PrEP, I am less likely to get HIV.b | Personal optimism |
| It is safe for me to have sex without condoms if I am using PrEP.b | Personal optimism, direct protection |
| It is safe for me to have sex without condoms if my partners are using PrEP.b | Personal optimism, direct protection |
| It is safe for me to have sex without condoms because other people are using PrEP.b | Personal optimism, indirect protection |
| Sex without condoms has become safer because of PrEP. | Community-level optimism |
| Because of PrEP, fewer people will get infected with HIV.b | Community-level optimism |
| The availability of PrEP makes condom use less important.b | Community-level optimism |
| As more people use PrEP, condom use becomes less important.b | Community-level optimism |
Note. PrEP = preexposure prophylaxis.
a
Score from very unlikely to very likely (5-point scale).
b
Score from strongly disagree to strongly agree (5-point scale).