| Very Greatly | Greatly | Some | Little/No | Don’t know | ||
| 1. | Trust in the doctor who offers me the trial | — | — | — | — | — |
| 2. | The reputation of the treatment center | — | — | — | — | — |
| 3. | The reputation of the cancer doctors | — | — | — | — | — |
| 4. | Wanting to help future cancer patients | — | — | — | — | — |
| 5. | Wanting to make a contribution to cancer research | — | — | — | — | — |
| 6. | Obtaining medical benefits for me personally | — | — | — | — | — |
| 7. | Wanting the best possible treatment | — | — | — | — | — |
| 8. | Having access to new drugs or treatments | — | — | — | — | — |
| 9. | Getting closer monitoring of my health care | — | — | — | — | — |
| 10. | Better management of my treatment side effects | — | — | — | — | — |