| Screening Item | Scale* | Sensitivity (%) | Specificity (%) |
| How often do you have problems learning about your medical condition because of difficulty understanding written information? | Always | 100 | 0 |
| Often | 58.1 | 61.1 | |
| Sometimes | 30.2 | 85.9 | |
| Occasionally | 9.3 | 97.5 | |
| Never | 2.3 | 99.5 | |
| How often do you have someone help you read hospital materials? | Always | 100 | 0 |
| Often | 58.1 | 76.8 | |
| Sometimes | 39.5 | 89.9 | |
| Occasionally | 18.6 | 95.9 | |
| Never | 4.7 | 98.5 | |
| How confident are you filling out medical forms by yourself? | Extremely | 100 | 0 |
| Quite a bit | 62.8 | 62.1 | |
| Somewhat | 39.5 | 89.9 | |
| A little bit | 16.3 | 97.9 | |
| Not at all | 4.7 | 98.9 | |
| In general, how easy or hard do you find it to understand medical statistics? | Very easy | 100 | 0 |
| Easy | 88.4 | 21.8 | |
| Hard | 34.9 | 81.7 | |
| Very hard | 11.6 | 98.9 | |
| How much do you agree or disagree with the following statement? In general, I depend on numbers and statistics to help me make decisions about my health. | Strongly agree | 100 | 0 |
| Somewhat agree | 79.1 | 16.2 | |
| Somewhat disagree | 37.2 | 65.7 | |
| Strongly disagree | 13.9 | 87.9 |
↵* Relative comparisons of the underlying degree or frequency; categories do not necessarily correspond to the actual numeric coding (i.e., the ascending or descending ordering of each Likert scale) of the item responses.