we asked respondents
to what extent they agreed (where 1 = strongly disagree and
5 = strongly agree) with statements about the impact of EHR usage
on their individual performance (e.g., “has facilitated my application
of clinical care guidelines for my patients”) and on their
practice’s performance (e.g., “has improved teamwork and continuity
of care provided to patients”). It took our respondents an average
of 24 min to complete the online survey. All items comprised in
our questionnaire instrument can be found in the Appendix (online
supplement). As shown next, several statistical analyzes including
exploratory and confirmatory factor analyses, cluster analyses, and
analyses of variance and covariance were performed. Data were
analyzed using the IBM SPSS Statistics software (version 20)