Trauma systems are associated with increased level 3 trauma centers.

BACKGROUND: State-supported trauma systems have a proven association with improved mortality, but to date, there are no data reported on what mechanism leads to this benefit. Our hypothesis is that trauma systems with funding support are associated with increased number of trauma centers (TCs). MATERIALS AND METHODS: A retrospective population study: data for the number of American College of Surgeons-verified adult TCs in 2010 were obtained from the American College of Surgeons and for state-designated TCs from state departments of health. Population and gross domestic product (GDP) were obtained from the US Census. The main outcome measure was the number of TCs per population and per GDP. Statistical analysis was carried out using the Mann-Whitney U-test and Poisson regression. RESULTS: There was no association between a trauma system and the numbers of level 1 or 2 centers. In states with funded trauma systems, the numbers of level 3 centers per GDP and per million state population were 4.76 ± 2.37/$100 billion and 1.77 ± 0.51/million people compared with 0.72 ± 1.72/$100 billion and 0.28 ± 0.60/million people for unfunded states (P < 0.05). Poisson multivariate regression identified system funding as an independent predictor of number of level 3 centers. CONCLUSIONS: Our study shows that the number of level 3 TCs significantly and independently correlated with the presence of a funded trauma system. The number of level 1 and 2 centers showed no such correlation. Further study will determine if increased number of level 3 centers leads to improved clinical outcome.

National cost of trauma care by payer status.

BACKGROUND: Several studies have described the burden of trauma care, but few have explored the economic burden of trauma inpatient costs from a payer's perspective or highlighted the differences in the average costs per person by payer status. The present study provides a conservative inpatient national trauma cost estimate and describes the variation in average inpatient trauma cost by payer status. METHODS: A retrospective analysis of patients who had received trauma care at hospitals in the Nationwide Inpatient Sample from 2005-2010 was conducted. Our sample patients were selected using the appropriate "International Classification of Diseases, Ninth Revision, Clinical Modification" codes to identify admissions due to traumatic injury. The data were weighted to provide national population estimates, and all cost and charges were converted to 2010 US dollar equivalents. Generalized linear models were used to describe the costs by payer status, adjusting for patient characteristics, such as age, gender, and race, and hospital characteristics, such as location, teaching status, and patient case mix. RESULTS: A total of 2,542,551 patients were eligible for the present study, with the payer status as follows: 672,960 patients (26.47%) with private insurance, 1,244,817 (48.96%) with Medicare, 262,256 (10.31%) with Medicaid, 195,056 (7.67%) with self-pay, 18,506 (0.73%) with no charge, and 150,956 (5.94%) with other types of insurance. The estimated yearly trauma inpatient cost burden was highest for Medicare at $17,551,393,082 (46.79%), followed by private insurance ($10,772,025,421 [28.72%]), Medicaid ($3,711,686,012 [9.89%], self-pay ($2,831,438,460 [7.55%]), and other payer types ($2,370,187,494 [6.32%]. The estimated yearly trauma inpatient cost burden was $274,598,190 (0.73%) for patients who were not charged for their inpatient trauma treatment. Our adjusted national inpatient trauma yearly costs were estimated at $37,511,328,659 US dollars. Privately insured patients had a significantly higher mean cost per person than did the Medicare, Medicaid, self-pay, or no charge patients. CONCLUSIONS: The results of the present study have demonstrated that the distribution of trauma burden across payers is significantly different from that of the overall healthcare system and suggest that although the burden of trauma is high, the burden of self-pay or nonreimbursed inpatient services is actually lower than that of overall medical care.