Table 3.
Failure reasons, failure counts, success counts, and average number of questions across the 6 tested symptom checkers.
| Symptom checker | Failure reasons and counts | Success counts | Number of questions, mean (SD) | |||||
|
|
Search limitations | Age limitations | Crashed | No DDxa generated | DDx generated |
|
||
| Avey | 0 | 0 | 0 | 2 | 398 | 24.89 (12.15) | ||
| Ada | 0 | 0 | 0 | 0 | 400 | 29.33 (6.62) | ||
| WebMD | 2 | 1 | 0 | 3 | 394 | 2.64 (2.11) | ||
| K Health | 18 | 35 | 0 | 2 | 345 | 25.23 (6.59) | ||
| Buoy | 2 | 3 | 5 | 74 | 316 | 25.67 (5.79) | ||
| Babylon | 15 | 0 | 0 | 351 | 34 | 5.91 (5.47) | ||
aDDx: differential diagnosis.