Lorraine I. Kelley-Quon, M.D., from the University of California in Los Angeles, and colleagues retrospectively analyzed the risk of appendiceal perforation within and between hospital types based on race and ethnicity in 107,727 children (2 to 18 years old) treated at 386 California hospitals. The children were 36 percent white, 53 percent Hispanic, 3 percent black, 5 percent Asian, and 8 percent "other."The researchers found that, after accounting for hospital and patient level factors, compared with white children, the risk of appendiceal perforation was greater at community hospitals for Hispanic (odds ratio [OR], 1.23) and Asian (OR, 1.34) children. The risk was also greater for Hispanic children treated at children's hospitals (OR, 1.18). Compared with black children treated at community hospitals, the risk of appendiceal perforation was greater for black children at county hospitals (OR, 1.12) and children's hospitals (OR, 2.01). There were no racial differences in risk within county hospitals.