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Comment & Response
November 25, 2013

Firearm Legislation and Gun-Related Fatalities

Author Affiliations
  • 1Department of Statistics, University of Marburg, Marburg, Germany
JAMA Intern Med. 2013;173(21):2011. doi:10.1001/jamainternmed.2013.9961

To the Editor In the empirical model set up by Fleegler et al,1 rates with a common denominator are used on both sides of the regression equation. Such ratio variables are known to produce spurious results in linear regression models.2 This is also applicable to generalized linear models, eg, Poisson regression.2(p380)