Agreement with payment models: public respondents only
| Mean level of agreement Mean (SD) n=264 | % respondents who indicated a level of agreement greater than 4 – ‘somewhat agree’ | Payment model | Statement describing payment model |
| 0.33 (0.67) | 0.76 | No payment | Research participants should never be paid or reimbursed for their involvement in a Challenge Study. |
| 1.05 (1.09) | 1.89 | Reimbursement model | Research participants should be paid for their involvement in a Challenge Study. Payment should aim to only reimburse the participant for time and travel expenses. |
| 1.09 (1.13) | 4.55 | Wage payment model | Research participants should be paid for their involvement in a Challenge Study. The hourly rate of payment should be determined by what other unskilled labourers are paid, but no extra money should be given for the risks involved. |
| 3.48 (1.83) | 55.30 | Payment for risk model | Research participants should be paid for their involvement in a Challenge Study. The base hourly rate of payment should be determined by what other unskilled labourers are paid with extra money given dependent on the risks involved. |
| 3.42 (1.61) | 48.11 | Market model | Research participants should be paid for their involvement in a Challenge Study. Payment should be determined by the research investigators and funders, and it should depend on the current market demands (the demand/supply of participants and how quickly recruitment needs to occur). |
Public respondents were asked to indicate their level of agreement with each statement on a slider scale from 0: strongly disagree to 6: strongly agree. The payment models provided were based on those proposed by Dickert and Grady.52