• Eva Huysmans, Karen Pien, Lieselot Callens, Lesley Van Loon, Kelly Ickmans, Jo Nijs, Ronald Buyl, Maarten Moens, Lisa Goudman, Griet Van Belleghem, and Koen Putman.
• I-CHER, Interuniversity Center for Health Economics Research Group, Belgium.
• Spine. 2019 Mar 1; 44 (5): 355-362.

Study DesignA retrospective study.ObjectiveThe aim of this study was to determine hospital costs related to surgery for lumbar radiculopathy and identify determinants of intramural costs based on minimal hospital and claims data.Summary Of Background DataCosts related to the initial hospitalization of patients undergoing surgery for lumbar radiculopathy make up the major part of direct health care expenditure in this population. Identifying factors influencing intramural costs can be beneficial for health care policy makers, and clinicians working with patients with lumbar radiculopathy.MethodsThe following data were collected from the University Hospital Brussels data warehouse for all patients undergoing surgery for lumbar radiculopathy in 2016 (n = 141): age, sex, primary diagnosis, secondary diagnoses, type of surgery, severity of illness (SOI), admission and discharge date, type of hospital admission, and all claims incurred for the particular hospital stay. Descriptive statistics for total hospital costs were performed. Univariate analyses were executed to explore associations between hospital costs and all other variables. Those showing a significant association (P < 0.05) were included in the multivariate general linear model analysis.ResultsMean total hospital costs were &OV0556; 5016 ± 188 per patient. Costs related to the actual residence (i.e., "hotel costs") comprised 53% of the total hospital costs, whereas 18% of the costs were claimed for the surgical procedure. Patients with moderate/major SOI had 44% higher hospital costs than minor SOI (P = 0.01). Presence of preadmission comorbidities incurred 46% higher costs (P = 0.03). Emergency procedures led to 72% higher costs than elective surgery (P < 0.001). Patients receiving spinal fusion had 211% higher hospital costs than patients not receiving this intervention (P < 0.001).ConclusionHospital costs in patients receiving surgery for lumbar radiculopathy are influenced by SOI, the presence of preadmission comorbidities, type of hospital admission (emergency vs. elective), and type of surgical procedure.Level Of Evidence3.

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