Informed consent evaluation survey items (English version)
| Question | Five-point Likert scale | Three-point Likert scale | Binary scale |
| You were anxious | Strongly disagree | Disagree | Positive |
| Disagree | |||
| Neither disagree or agree | Neutral | ||
| Agree | Agree | Negative | |
| Strongly agree | |||
| You did not mind | Strongly disagree | Disagree | Negative |
| Disagree | |||
| Neither disagree or agree | Neutral | Positive | |
| Agree | Agree | ||
| Strongly agree | |||
| You were bored | Strongly disagree | Disagree | Positive |
| Disagree | |||
| Neither disagree or agree | Neutral | ||
| Agree | Agree | Negative | |
| Strongly agree | |||
| You were irritated | Strongly disagree | Disagree | Positive |
| Disagree | |||
| Neither disagree or agree | Neutral | ||
| Agree | Agree | Negative | |
| Strongly agree | |||
| You found the questions easy | Strongly disagree | Disagree | Negative |
| Disagree | |||
| Neither disagree or agree | Neutral | Positive | |
| Agree | Agree | ||
| Strongly agree | |||
| You felt pressured | Strongly disagree | Disagree | Positive |
| Disagree | |||
| Neither disagree or agree | Neutral | ||
| Agree | Agree | Negative | |
| Strongly agree | |||
| Taking the comprehension quiz made you feel like the researchers really wanted you to understand the clinical trial | Strongly disagree | Disagree | Negative |
| Disagree | |||
| Neither disagree or agree | Neutral | Positive | |
| Agree | Agree | ||
| Strongly agree | |||
| Testing is a good way to find out if a person really understands the clinical trial | Strongly disagree | Disagree | Negative |
| Disagree | |||
| Neither disagree or agree | Neutral | Positive | |
| Agree | Agree | ||
| Strongly agree |