Results of the knowledge test given at the end of the decision aid.
| Evaluation factors | Results of Patient Responses, n (%) |
|---|---|
| Knows which option has the highest chance of withdrawal symptoms | 46 (93.9) |
| Knows that over time, the pain from osteoarthritis usually gets worse | 45 (93.8) |
| Knows which option has the highest chance of bleeding stomach ulcers or heart attack | 39 (79.6) |
| Knows that if 100 people take nonsteroidal antiinflammatory drug pills for 1 to 6 months, 1 person with no history of heart disease will have a heart attack from taking them | 38 (79.2) |
| Knows which option has the highest chance of improving pain | 31 (63.3) |
| All questions answered correctly | 26 (54) |
| At least 3 questions answered correctly | 44 (92) |