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Journal of Neurosurgical Sciences 2018 June;62(3):265-70

DOI: 10.23736/S0390-5616.16.03664-X

Copyright © 2016 EDIZIONI MINERVA MEDICA

language: English

Readmission after spinal cord injury: analysis of an institutional cohort of 795 patients

Chester K. YARBROUGH 1 , Paul G. GAMBLE 2, Muhammad BURHAN JANJUA 3, Mengxuan TANG 2, Rahel GHENBOT 2, Andrew J. ZHANG 4, Neringa JUKNIS 5, Ammar H. HAWASLI 1, Michael P. KELLY 6, Wilson Z. RAY 1

1 Department of Neurological Surgery, Washington University School of Medicine, St. Louis, MO, USA; 2 Washington University School of Medicine, St. Louis, MO, USA; 3 Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA; 4 University of Minnesota School of Medicine, Minneapolis, MN, USA; 5 Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA; 6 Department of Orthopedic Surgery, Washington University School of Medicine, St. Louis, MO, USA


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BACKGROUND: Recent studies in other fields have suggested that healthcare on the weekend may have worse outcomes. In particular, patients with stroke and acute cardiovascular events have shown worse outcomes with weekend treatment. It is unclear whether this extends to patients with spinal cord injury. This study was designed to evaluate factors for readmission after index hospitalization for spinal cord injury.
METHODS: A total of 795 consecutive patients over an 11-year period were analyzed. After excluding patients with chronic spinal cord injury and surgical care at an outside hospital, 745 patients remained. The primary outcome measure evaluated was 30-day readmission. Secondary measures include perioperative complications, readmission rate when discharged on the weekend, and the effect of race and insurance status on readmission rate. Univariate and multivariate analysis were utilized to evaluate the covariates collected. The χ2 test, Fisher’s exact test, and linear and logistic regression methods were utilized for statistical analysis.
RESULTS: A total of 745 patients were analyzed after exclusions. Payer status did not affect length of stay, ICU length of stay, or perioperative complications. Neither weekend admission nor weekend operation affected length of stay, ICU length of stay, or readmission by 30 days. Patients undergoing weekend surgical treatment had lower perioperative complication rates (2.2% vs. 6.5% on weekday, P<0.01). Discharge on the weekend was associated with a significantly lower rate of readmission by 30 days (OR=0.07, 95% CI: 0.009-0.525, P<0.005). Payer status was associated with 30-day readmission (P<0.005). Patients with Medicare (20.8%) and Medicaid (20.1%) showed higher rates of readmission than patients with other payers. 21.1% of African-American patients were readmitted, versus 10.2% of other patients (Odds ratio: 2.2, 95% confidence interval 1.36-3.27, P<0.001). Correcting for payer status lessened but did not eliminate the effect of race on readmission.
CONCLUSIONS: Weekend admission did not increase perioperative complications or hospital length of stay. After discharge, patients with Medicaid and Medicare show higher rates of 30-day readmission, as do African-American patients. The effect of race on readmission is multifactorial, and may partially explained by the increased rate of Medicaid coverage in African-Americans in our institutions catchment area.


KEY WORDS: Spinal cord injury - Nervous system trauma - Spinal fusion - Neurosurgical procedure - Critical care - Healthcare disparities

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