Table 2.

Preimplementation comparative system evaluation objective measures

Objective Task Measure	EHRa	Asthma Timelinea	95% CI of the Differences	P Value c
Total Time (minutes)	5.7 (1.7)	2.0 (1.0)b	[−5.2, −2.4]	<.001
Screens	12.8 (3.9)	1.0 (0.0)	[−14.3, −9.4]	<.001
Accuracy (proportion correct)
Inpatient Admissions	0.42	0.92	[0.1, 0.9]	.03
Steroid Courses	0.17	0.92	[0.4, 1.0]	.001

^aFor continuous measures (time, screens) values reported are mean (SD).

^bIncludes time for the participant to explore the visualization.

^cPaired t-test for continuous measures (time, screens), Chi-squared for proportions (accuracy).