Abstract
Background: Diagnostic testing and treatment recommendations can vary when medical care is sought by individuals for low back pain (LBP), leading to variation in quality and costs of care. We examine how first provider seen by an individual at initial diagnosis of LBP influences downstream utilization and costs. Methods: Using national private health insurance claims data, individuals age 18 or older were retrospectively assigned to cohorts based on the first provider seen at the index date of LBP diagnosis. Exclusion criteria included individuals with a diagnosis of LBP or any serious medical conditions, or an opioid prescription recorded in the six months prior to the index date. Outcome measures included use of imaging, back surgery rates, hospitalization rates, emergency department visits, early- and long-term opioid use, and costs (out-of-pocket and total costs of care) twelve months post-index date. We used a common econometric technique, two-stage residual inclusion (2SRI) estimation to reduce selection bias in the choice of first provider, controlling for demographics.Results: Among 3,799,593 individuals, cost and utilization varied considerably based on first provider seen by the patient. The frequency of early opioid prescription was significantly lower when care began with an acupuncturist or chiropractor, and highest for those who began with an emergency medicine physician or advanced practice registered nurse (APRN). Long-term opioid prescriptions were low across most providers except physical medicine and rehabilitation physicians and APRNs. The frequency and time to serious illness varied little across providers. Total cost of care was lowest when starting with a chiropractor ($5,093) or primary care physician ($5,660), and highest when starting with an orthopedist ($9,434) or acupuncturist ($9,205). Conclusion: The first provider seen by individuals with LBP was associated with large differences in health care utilization, opioid prescriptions, and cost while there were no differences in delays in diagnosis of serious illness.
Long-term therapeutic outcome of patients with low back pain treated at lumbago pain clinic
