Journal
NEUROMODULATION
Volume 24, Issue 6, Pages 1033-1041Publisher
ELSEVIER
DOI: 10.1111/ner.13405
Keywords
Economic analysis; failed back surgery syndrome; healthcare resource use; optimized medical management; subcutaneous nerve field stimulation
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The SubQStim study analyzed healthcare resource use and cost of FBSS patients receiving subcutaneous nerve field stimulation. The treatment group had significantly higher costs largely due to device acquisition/implantation, with potential benefits in reducing pain medication and healthcare visits. Further long-term cost-effectiveness analyses are needed to fully evaluate the benefits of stimulation.
Objectives To undertake a detailed healthcare resource use and cost analysis of the SubQStim study, which randomized patients with failed back surgery syndrome (FBSS) with low back pain to receive subcutaneous nerve field stimulation in combination with optimized medical management (treatment) or optimized medical management alone (control). Materials and Methods Patient-level data from the SubQStim study were used to present descriptive analyses of healthcare resource use and estimated costs for pain medication, healthcare visits, adverse events, and device acquisition/implantation. A United Kingdom National Health Service perspective was adopted, using cost data from national tariffs, drug and device prices, and social care cost studies. Results were calculated as the mean cost per patient over the nine-month follow-up period. Results Mean cost per patient was 18,403 pound in the treatment group versus 1613 pound in the control group. Almost 90% of the cost in the treatment group consisted of device acquisition/implantation. Higher adverse event costs were observed for patients in the treatment group, but lower costs were observed for pain medication and healthcare visits. Over nine months, opioid use decreased in the treatment group and increased in the control group. Enrolment and follow-up were terminated early in the clinical study, leading to substantial between-patient variability in each cost category. Conclusions Subcutaneous nerve field stimulation has the potential to offset the initial costs of the device by reducing analgesic medication and the number of healthcare visits in FBSS patients, alongside potential gains in health-related quality of life. There remains uncertainty in long-term costs and cost-effectiveness of stimulation and longer-term follow-up analyses are needed.
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