July 13, 2026 · JAMA internal medicine · DOI: 10.1001/jamainternmed.2026.2889

Low-Value Services and Longitudinal Knowledge Assessment Performance

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The authors aimed to investigate the relationship between the use of low-value services (LVSs) in healthcare and physicians' clinical knowledge, as measured by their performance on the Longitudinal Knowledge Assessment (LKA). The study found that patients treated by physicians with higher LKA scores were significantly less likely to receive LVSs, indicating that better clinical knowledge may be associated with more judicious use of healthcare resources.

Jonathan L Vandergrift, Bruce E Landon, Weifeng Weng, Bradley M Gray

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