JOURNAL ARTICLE

Hospital costs, incidence, and inhospital mortality rates of traumatic subdural hematoma in the United States

Paul Kalanithi, Ryan D Schubert, Shivanand P Lad, Odette A Harris, Maxwell Boakye
Journal of Neurosurgery 2011, 115 (5): 1013-8
21819196

OBJECT: This study provides the first US national data regarding frequency, cost, and mortality rate of traumatic subdural hematoma (SDH), and identifies demographic factors affecting morbidity and death in patients with traumatic SDH undergoing surgical drainage.

METHODS: A retrospective analysis was conducted by querying the Nationwide Inpatient Sample, the largest all-payer database of nonfederal community hospitals. All cases of traumatic SDH were identified using ICD-9 codes. The study consisted of 2 parts: 1) trends data, which were abstracted from the years 1993-2006, and 2) univariate analysis and multivariate logistic regression of demographic variables on inhospital complications and deaths for the years 1993-2002.

RESULTS: Admissions for traumatic SDH increased 154% from 17,328 in 1993 to 43,996 in 2006. Inhospital deaths decreased from 16.4% to 11.6% for traumatic SDH. Average costs increased 67% to $47,315 per admission. For the multivariate regression analysis, between 1993 and 2002, 67,864 patients with traumatic SDH underwent operative treatment. The inhospital mortality rate was 14.9% for traumatic SDH drainage, with an 18% inhospital complication rate. Factors affecting inhospital deaths included presence of coma (OR = 2.45) and more than 2 comorbidities (OR = 1.60). Increased age did not worsen the inhospital mortality rate.

CONCLUSIONS: Nationally, frequency and cost of traumatic SDH cases are increasing rapidly.

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