Table 2.
Overall and range of average diagnostic and triage accuracy of symptom checkers in each study.
| First author (year) | No. of symptom checkers | Overall average diagnostic accuracy (%) | Range of average diagnostic accuracy (%) | Average triage accuracy (%) | Range of average triage accuracy (%) |
|---|---|---|---|---|---|
| Hageman (2015)21 | 1 | 33 | n/a | ns | n/a |
| Semigran (2015)1 | 23 | 34 | 5–50 | 57 | 33–78 |
| Powley (2016)15 | 1 | 19 | n/a | ns | n/a |
| Berry (2019)22 | 5 | ns | 3–16.4 | 48.8 | ns |
| Nazario Arancibia (2019)16 | 1 | 37.9 | n/a | ns | n/a |
| Shen (2019)17 | 1 | 26 | n/a | 66.7 | n/a |
| Gilbert (2020)23 | 8 | 26.1 | 18–48 | 90.1 | 80–97.8 |
| Hill (2020)18 | 36 | 36 | 12–61 | 49 | 17–61 |
| Yu (2020)19 | 2 | ns | ns | 62 | 50–74 |
| Yoshida (2021)20 | 11 | 21.7 | 0–38.5 | ns | ns |
n/a not applicable as only one symptom checker was used, ns not stated.