Table 2.

Association of practice characteristics with measure performance, with marginal means estimated using multivariate regression models.

Electronic health record system	Disease activity measure performance					Functional status measure performance
	Unadjusted performance, % (95% CI)	P value	Adjusted performance, % (95% CI)	P value	Unadjusted performance, % (95% CI)		P value	Adjusted performance, % (95% CI)	P value
NextGen	52.2 (44.5-59.9)	Reference	51.4 (42.3-60.5)	Reference	51.0 (42.9-59.2)		Reference	49.3 (39.4-59.3)	Reference
eClinicalWorks	45.7 (33.8-57.5)	.36	42.5 (30.0-54.9)	.29	30.3 (17.9-42.8)		.01	29.0 (15.4-42.6)	.03
Amazing Charts	46.7 (32.1-61.3)	.52	50.6 (35.3-65.8)	.93	32.1 (16.7-47.4)		.03	36.5 (19.8-53.2)	.22
eMDs	31.4 (11.3-51.6)	.06	29.8 (9.6-50.1)	.06	11.3 (0-32.6)		.001	10.9 (0-33.0)	.003
GE Centricity	62.0 (40.9-83.2)	.39	51.7 (30.1-73.4)	.99	48.6 (26.3-70.8)		.84	47.3 (23.8-70.8)	.88
Allscripts	11.4 (0-35.0)	<.001	5.0 (0-29.2)	.001	30.7 (5.8-55.6)		.13	28.1 (1.6-54.5)	.15
Aprima	46.1 (22.4-69.7)	.63	48.7 (24.6-72.8)	.84	33.6 (8.7-58.5)		.19	35.2 (8.9-61.5)	.34
Othera	13.2 (4.1-22.2)	<.001	17.3 (8.1-26.6)	<.001	15.0 (5.5-24.5)		<.001	16.8 (6.7-27.0)	<.001

^aOther electronic health records included any system used in <2% of practices, including Lytec MD, Medent, Medisoft, Raintree System IC, MD office, Integrity, Carecloud, MedTrio, Greenway/Primesuite, iPatientCare, Prime Clinical System, MacPractice MD, IMS, SRS EHR, PrognoCIS, Cerner, Practice Fusion, DrChrono, Chart Maker Clinical, STI, American Medical Software, Athena Clinicals, Praxis EMR, RheumDocs, Greenway Intergy, Athena UniCharts, and ChartLogic. Adjusted models were adjusted for practice characteristics and patient case-mix.