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Correction
December 6, 2016

Errors in Equation and Modeling Parameter

JAMA. 2016;316(21):2277. doi:10.1001/jama.2016.18002

In the Original Investigation entitled “Association Between Gun Law Reforms and Intentional Firearm Deaths in Australia, 1979-2013,” published in the July 19, 2016, issue of JAMA,1 2 small typographical errors occurred. In the Methods section, in the equation for Model c, the second operator should be a plus sign (not an equals sign). Also in the Methods section, a paragraph describing the models should use the expression eβ32 as such: “The 3 models are related because the model is parameterized, β32 = β11−β10 , and therefore, eβ32 estimates the ratio of annual trend.…” The article was corrected online.

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