Example of a DCE question
| Service A | Service B | |
| How long you have to wait for an appointment after first contacting the service | An appointment at your convenience after 48 h | Drop in the same day and wait |
| Who conducts your tests | A doctor or nurse WITHOUT specialist STI knowledge | A doctor or nurse WITH specialist STI knowledge |
| How long after being tested before you get your results | Wait 3 days for results | Wait 7 days for results |
| How you get your test results | Get results by email | Get results by post to your home address |
| Which test results you get | You are told test results ONLY IF you have an infection (Positive results only) | You are told all test results whether you have an infection or not (Positive and Negative results) |
| How many STIs you are tested for | Most STIs are tested for but not syphilis, herpes and HIV | All STIs are tested for including syphilis, herpes and HIV |
Respondents were asked to indicate whether they preferred service A or B.
DCE, discrete choice experiment; STI, sexually transmitted infection.