Table 1.

Example of respondent exercise screen: “Which of the following treatments would be your most preferred for your Osteoarthritis of the Knee? Select one”

Treatment characteristic	Treatment A	Treatment B	Treatment C	Treatment D
Type	An injection (or series of injections) of a viscosupplement	Oral medication that requires a prescription from your doctor	Oral pain medications that you can buy without a prescription	An injection of steroid or cortisone
Frequency of dosing	1 injection (in a single office visit)	Oral tablet, 3–4 times per day (as needed)	Oral tablet, 3–4 times per day (as needed)	1 injection (in a single office visit)
Time to wait for pain relief to start	Pain relief may start within 1 week after the first injection, reaching its maximum within 4 weeks	Within 3 hours	Within 3 hours	Within 3 hours
Magnitude of pain relief	Reduces pain from a level 10 to 5	Reduces pain from a level 10 to 5	Reduces pain from a level 10 to 5	Reduces pain from a level 10 to 5
Duration of pain relief	Up to 12 months	Up to 12 hours	Up to 8 hours	Up to 3 months
Ability to slow progression of the disease	No impact	No impact	No impact	No impact
Out-of-pocket cost per knee (not including office visit co-pays)	€100 per course of treatment	€5 per month (€30 for 6 months)	€5 per month (€30 for 6 months)	€0 (no out-of-pocket cost)
Your most preferred treatment	○	○	○	○

Note: “○” denotes the button for responders to make their choice.