Background: For individuals with neck pain (NP) the initial contact health care provider (HCP) and subsequent services used are less well understood than for low back pain (LBP). The purpose of this retrospective observational study of administrative data was to examine the association between type of initial contact HCP, service utilization, and total episode cost for the management of NP.
Methods: A US national sample of NP episodes completed in 2017-2019 was analyzed using episode of care as the unit of analysis. Separate analyses of a combined surgical and non-surgical (pooled) sample and a non-surgical sample were performed. Seventeen types of HCP initially contacted by an individual with NP was the primary independent variable. Dependent measures included rate and timing of use of fourteen types of health care services and total episode cost. A mixed effects model applied to pooled and non-surgical samples was used to test the association between initial contact HCP, total episode cost and rate of prescription opioid and NSAID use for NP.
Results: The study included 323,348 continuously insured individuals aged 18 years and older with 390,992 complete episodes of NP involving 321,538 HCPs and incurring $472,399,064 in expenditures. 53.0% of episodes had initial contact with a primary care or specialist HCP, with these episodes associated with higher rates of imaging, pharmacologic, and interventional services. 40.4% of episodes had initial contact with a non-prescribing HCP, with these episodes associated with higher rates of non-pharmacological services. Adjusted total episode cost was lowest when a chiropractor was the initial contact HCP. Results were consistent for individuals experiencing single or multiple episodes during the study period.
Conclusions: This study of a large national cohort of commercially insured individuals with NP helps fill a knowledge gap regarding NP care pathway attributes. Like LBP, the treatment of NP is highly variable with the initial HCP selected by an individual with NP associated with differences in services received and episode cost. Initial contact with a non-prescribing HCP was associated with lower rates of imaging, pharmacology, and interventional services.