1. Racial and Geographic Variations in Colectomy Rates Among Hospitalized Ulcerative Colitis Patients 
Geoffrey C. Nguyen, Thomas A. LaVeist, Susan Gearhart, Theodore M. Bayless, Steven R. Brant 
Clinical Gastroenterology and Hepatology 
Volume 4, Issue 12, Pages e1 (December 2006)
DOI: /j.cgh
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2. Figure 1
(A) Colectomy rates are depicted over time for hospitalized UC patients in the NIS 1998–2003, stratified by race and ethnicity. There is a statistically significant decreasing trend in colectomy rate in the total population and in whites but not in African-Americans and Hispanics. Colectomies per 1000 hospital days (hd) are numerically displayed (below the calendar year). (B) Colectomy rates for hospitalized UC patients shown here underscore substantial geographic variation, which appears to be narrowing over time. Colectomies per 1000 hd are numerically displayed (below the calendar year).
Clinical Gastroenterology and Hepatology 2006 4, e1DOI: ( /j.cgh )
Copyright © 2006 AGA Institute Terms and Conditions

3. Figure 2
Kaplan-Meier cumulative incidence curves for colectomy among hospitalized UC patients in the NIS 1998–2003, stratified by race and ethnicity, are depicted. The 3 incidence curves are statistically different by the log-rank test (P = .0001).
Clinical Gastroenterology and Hepatology 2006 4, e1DOI: ( /j.cgh )
Copyright © 2006 AGA Institute Terms and Conditions

4. Figure 3
The relative contributions of preoperative and postoperative time intervals to total LOS are shown for hospitalized UC patients who underwent colectomy in the NIS 1998–2003, stratified by race, geographic region, and health insurance payer.
Clinical Gastroenterology and Hepatology 2006 4, e1DOI: ( /j.cgh )
Copyright © 2006 AGA Institute Terms and Conditions