Table 3.

The results of the analyses of covariance for distress.

Variablesa	Model A		Model B
	F test (df)	P value	F test (df)	P value
Number of systems in daily use	3.61 (1)	.06	0.56 (1)	.46
Experience of using EHRsb	15.32 (1)	<.001	15.54 (1)	<.001
Participation in ISc development	0.11 (1)	.75	0.00 (1)	.99
Perceived benefits	—d	—	3.74 (1)	.05
Technical problems	—	—	21.05 (1)	<.001
Feedback	—	—	0.41 (1)	.52
User friendliness	—	—	6.77 (1)	.01
R2	0.018 (1)	—	0.028 (1)	—

^aAll analyses were adjusted for gender, age, employment sector, specialization status, and the electronic health record in use.

^bEHRs: electronic health records.

^cIS: information systems.

^dNot applicable.