科研之友
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摘要
Context. Investigators need novel methods for timely identification of patients with serious illness to test or implement new palliative care models.
Objectives. The study's aim was to develop an electronic health record (EHR) phenotype to identify patients with late-stage dementia for a clinical trial of palliative care consultation.
Methods. We developed a computerized method to identify patients with dementia on hospital admission. Within a data warehouse derived from the hospital's EHR, we used search terms of age, admission date, and ICD-9 and ICD-10 diagnosis codes to create an EHR dementia phenotype, followed by brief medical record review to confirm late-stage dementia. We calculated positive predictive value, false discovery rate, and false negative rate of this novel screening method.
Results. The EHR phenotype screening method had a positive predictive value of 76.3% for dementia patients and 24.5% for late-stage dementia patients; a false discovery rate of 23.7% for dementia patients and 75.5% for late-stage dementia patients compared to physician assessment. The sensitivity of this screening method was 59.7% to identify hospitalized patients with dementia. Daily screening-including confirmatory chart reviews-averaged 20 minutes and was more feasible, efficient, and more complete than manual screening.
Conclusion. A novel method using an EHR phenotype plus brief medical record review is effective to identify hospitalized patients with late-stage dementia. In health care systems with similar clinical data warehouses, this method may be applied to serious illness populations to improve enrollment in clinical trials of palliative care or to facilitate access to palliative care services.
- 出版日期2018-4
