Table 2.

Mean triage accuracy of symptom checkers and participants.

Triage level	Percent triage accuracy, mean (SD)			95% CI
	All 15 SCsa	Subset of 11 SCsb	Participantsc
Emergency cases	80.6 (17.9)	79.8 (17.2)	67.5 (16.4)	64.1-70.8
Nonemergency cases	58.5 (29.1)	61.6 (27.8)	68.4 (13.8)	65.6-71.2
Self-care cases	30.6 (25.7)	41.8 (20.3)	46.7 (15.9)	43.4-49.8
Overall	58.0 (12.8)	61.6 (11.0)	60.9 (6.8)	59.5-62.3

^aSC: symptom checker.

^bFor the subset of 11 SCs, SCs never recommending self-care or always recommending emergency care by design were excluded.

^cFor the participant sample, 95% CIs were calculated using bootstrapping.