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Erschienen in:
02.05.2023 | Original Research
Reducing 25-Hydroxyvitamin D Testing in a Large, Urban Safety Net System
Erschienen in: Journal of General Internal Medicine | Ausgabe 10/2023
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Background
25-Hydroxyvitamin D testing is increasing
despite national guidelines and Choosing Wisely recommendations against routine screening. Overuse can lead to misdiagnosis and unnecessary downstream testing and treatment. Repeat testing within 3 months is a unique area of overuse.
Objective
To reduce 25-hydroxyvitamin D testing in a large safety net system comprising 11 hospitals and 70 ambulatory centers.
Design
This was a quality improvement initiative with a quasi-experimental interrupted time series design with segmented regression.
Participants
All patients in the inpatient and outpatient settings with at least one order for 25-hydroxyvitamin D were included in the analysis.
Interventions
An electronic health record clinical decision support tool was designed for inpatient and outpatient orders and involved two components: a mandatory prompt requiring appropriate indications and a best practice advisory (BPA) focused on repeat testing within 3 months.
Main Measures
The pre-intervention period (6/17/2020–6/13/2021) was compared to the post-intervention period (6/14/2021–8/28/2022) for total 25-hydroxyvitamin D testing, as well as 3-month repeat testing. Hospital and clinic variation in testing was assessed. Additionally, best practice advisory action rates were analyzed, separated by clinician type and specialty.
Key Results
There were 44% and 46% reductions in inpatient and outpatient orders, respectively (p < 0.001). Inpatient and outpatient 3-month repeat testing decreased by 61% and 48%, respectively (p < 0.001). The best practice advisory true accept rate was 13%.
Conclusion
This initiative successfully reduced 25-hydroxyvitamin D testing through the use of mandatory appropriate indications and a best practice advisory focusing on a unique area of overuse: the repeat testing within a 3-month interval. There was wide variation among hospitals and clinics and variation among clinician types and specialties regarding actions to the best practice advisory.
