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. Author manuscript; available in PMC: 2013 Feb 1.
Published in final edited form as: J Trauma Acute Care Surg. 2012 Feb;72(2):385–389. doi: 10.1097/TA.0b013e3182411c67

Table 2.

Inpatient Overall Case Nephrectomy Rate Differences by Trauma System Inclusiveness

Nephrectomy (%) Relative Risk
Trauma System No Yes Total (N) RR# 95% CI
Exclusive* 4652 (94) 285 (5.8) 4937 Ref Ref Ref
More Inclusive** 6292 (95) 366 (5.5) 6658 0.80 0.80 1.04
Most Inclusive*** 2827 (96) 118 (4.0) 2945 0.70 0.56 0.88
Total 13,771 (95) 769 (5.3)
*

State list: FL, MA, NC, NV, RI, UT, AR, ME

**

State list: AZ, CA, KY, MD, NJ, NY, VT, WV, MI

***

State list: CO, IA, OR, WA, WI, SC

#

Adjusted for Age, ISS, Year, Renal injury severity, Comorbidity, Mechanism, Head AIS, Teaching hospital, Insurance