Here's an interesting report comparing the diagnostic accuracy of physicians with symptom checkers: jamanetwork.com/journals/ja...
Reassuringly, 'Physicians listed the correct diagnosis first more often across all vignettes compared to symptom checkers (72.1% vs 34.0%) as well as in the top three diagnoses listed (84.3% v 51.2%)'.
The symptom checker validation report can be found here:
bmj.com/content/351/bmj.h34...
The standardized patient vignettes used, along with the diagnosis and triage accuracy for each symptom checker can be found here:
bmj.com/content/bmj/suppl/2...
Slashdot discussion:
science.slashdot.org/story/...
Neil