Electronic Health Record Transition and Impact on Screening Test Follow-Up

Introduction: Nonurgent clinically significant test results (CSTRs) are a common cause of missed and delayed diagnoses. However, little is known about the impact of electronic health record (EHR) transitions on CSTR follow-up. This study examines follow-up rates for three CSTRs (incidental pulmonary nodules [IPNs]), prostate-specific antigen [PSA], and Pap smears) before and after EHR transition.Methods: This is a retrospective cohort study at an urban tertiary medical center using an interrupted time series (ITS) design to assess monthly changes in CSTR follow-up-defined as completion of computed tomography chest imaging 5 to 13 months after first mention of an IPN in a radiology report; completion of a follow-up PSA test, urology visit, or prostate biopsy within 6 months of the first reported PSA > 4; or completion of a colposcopy or gynecology visit within 6 months of a first reported abnormal Pap smear. Patients were included with first-onset abnormal CSTRs for IPN, PSAs > 4, or abnormal Pap smears occurring in the 24 months before and after the EHR transition.Results: There were no significant differences in follow-up in the IPN or the Pap smear ITS models. In the PSA ITS model, follow-up was significantly decreasing (p = 0.0133) in the preintervention period, and there was a significant change in trend from intervention to postintervention (p = 0.0279).Conclusion: EHR transition reversed a decreasing trend over time for PSA test follow-up, while IPN and Pap smear follow-up trends did not change significantly. Effects of EHR transition may differ by test studied.