Numerical Error: In the Original Contribution entitled “Use of Advanced Radiology During Visits to US Emergency Departments for Injury-Related Conditions, 1998-2007,” published in the October 6, 2010, issue of JAMA (2010;304[13]:1465-1471), a numerical error appeared in the “Results” section of the abstract and in the text. On page 1465, in the “Results” section of the abstract, the second sentence should be “There was a small increase in the prevalence of life-threatening conditions (1.7% [95% CI, 1.2%-2.2%; 89 of 5237 visits] in 1998 and 2.0% [95% CI, 1.6%-2.5%; 142 of 6567 visits] in 2007; P = .04 for trend).” On page 1468, in the first column, first full paragraph, the first sentence should be “A life-threatening condition was diagnosed in 89 of 5237 sampled visits (1.7%; 95% CI, 1.2%-2.2%) in 1998 compared with 142 of 6567 visits (2.0%; 95% CI, 1.6%-2.5%) in 2007 (P = .04 for trend; AOR for 2007 vs 1998, 1.20 [95% CI, 0.81-1.79]).”