Unbiased Analysis of Today's Healthcare Issues

Diagnostic Ability and Quality of Care

Written By: Jason Shafrin - Jun• 04•17

Quality of care often is seen as how physicians and other health care providers treat patients with a given disease.  Accurately diagnosing the disease a patient has, however, is in almost all cases a necessary condition to provide high-quality treatment.  Nevertheless, a physician’s ability to accurately diagnose a disease is rarely measured within exsting quality metrics.  In a recent paper with co-authors Jenny Griffith, Jin Joo Shim, Caroline Huber, Arijit Ganguli, and Wade Aubry, we examine how regional differences in diagnostic ability for a relatively rare back pain condition–ankylosing spondylitis–are correlated with quality of care metrics. The abstract from this paper–titled Geographic Variation in Diagnostic Ability and Quality of Care Metrics: A Case Study of Ankylosing Spondylitis and Low Back Pain–is below, but do read the whole piece.

Studies examining geographic variation in care for low back pain often focus on process and outcome measures conditional on patient diagnosis but generally do not take into account a physician’s ability to diagnose the root cause of low back pain. In our case study, we used increased detection of ankylosing spondylitis—a relatively rare inflammatory back disease—as a proxy for diagnostic ability and measured the relationship between ankylosing spondylitis detection, potentially inappropriate low back pain care, and cost. Using 5 years of health insurance claims data, we found significant variation in ankylosing spondylitis detection across metropolitan statistical areas (MSAs), with 8.1% of the variation in detection explained by a region’s racial composition. Furthermore, low back pain patients in MSAs with higher ankylosing spondylitis detection had 7.9% lower use of corticosteroids, 9.0% lower use of opioids, and 8.2% lower pharmacy cost, compared with patients living in low-detection MSAs.

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