Errors in Statistical Analyses

In the article titled “Association of Environmental Toxins With Amyotrophic Lateral Sclerosis,” published online May 9, 2016, and in the July 2016 issue of JAMA Neurology,¹ incorrect data were used in statistical analyses, resulting in errors being reported in the Abstract, Results, and Discussion sections of the text; Figure 1; Table 3; and eTables 1, 3, 5, 7, 9, and 10 in the Supplement. All analyses were rerun and corrections were made to data in Table 3 and Figure 1 in the article, as well as eTables 1, 3, 5, 7, 9, and 10 in the Supplement.² This article was corrected online.