Table 2. Coefficients of the regression models on the associations between EHR implementation and perception on our 13 statements on EHR use, data quality, and data reuse (including p -value). Center A (legacy EHR) used as reference cente r ; interaction term is implementation combined with center B (paper-based) .

	Implementation	p -Value	Nurse	p -Value	Administrating staff	p -Value	Other staff	p -Value	Center B	p -Value	Interaction term	p -Value
EHR use
1. I have a clear overview of the patients' most important data (e.g., allergies)	−0.04	0.791	0.28	0.035	0.50	0.016	0.48	0.001	−0.11	0.446	0.12	0.545
2. The documentation method directly supports me in providing good care	− 0.49	0.000	0.55	0.000	1.11	0.000	0.97	0.000	0.27	0.079	0.19	0.360
3. The documentation method is time efficient	− 0.63	0.000	0.41	0.013	0.84	0.000	0.82	0.000	0.14	0.369	0.18	0.446
4. The patient data are stored and exchanged securely	−0.14	0.358	0.17	0.289	−0.03	0.884	0.02	0.912	− 1.08	0.000	1.34	0.000
5. The EHR provides all types of health care professionals a place to document patient data, in one integrated patient file	1.27	0.000	0.44	0.009	−0.15	0.573	0.28	0.136	0.11	0.526	−0.15	0.543
6. I document data in a way that colleagues can properly use those data in providing care	0.22	0.265	0.80	0.000	0.26	0.364	0.80	0.000	−0.56	0.004	0.68	0.016
Data quality
7. The patient data in the file are correct	−0.46	0.002	−0.04	0.811	−0.46	0.055	0.37	0.069	−0.25	0.166	0.41	0.062
8. The patient data in the file are up-to-date	0.17	0.225	−0.20	0.186	−0.37	0.071	0.14	0.398	−0.26	0.095	0.39	0.059
9. The patient data in the file are complete	−0.07	0.598	0.08	0.599	0.40	0.049	0.42	0.011	−0.14	0.381	0.38	0.063
Data reuse
10. I can easily create an overview of the patients' data for the patient or external referrers	−0.46	0.003	0.54	0.001	0.80	0.001	0.17	0.347	−0.33	0.052	0.63	0.006
11. The documentation method provides me with a way of properly communicating with colleagues and external referrers	− 0.61	0.000	0.25	0.093	0.55	0.028	0.29	0.096	− 0.68	0.000	1.05	0.000
12. The data I document on my patients provide me with an insight in the quality of the care I provide	− 0.49	0.001	0.95	0.000	1.44	0.000	1.43	0.000	0.24	0.151	0.05	0.817
13. The documentation method supports me or my colleagues in doing research	0.30	0.073	1.49	0.000	1.67	0.000	1.19	0.000	−0.05	0.775	0.27	0.263

Abbreviation: EHR, electronic health record.

Note: p -Value after Bonferroni correction: 0.0019; significant values are given in bold.