Physical activity attenuates age-related biomarker alterations in preclinical AD

In the article “Physical activity attenuates age-related biomarker alterations in preclinical AD” by O.C. Okonkwo et al. (Neurology® 2014;83:1753–1760), there is an error in table 1. Under “Vascular indices,” the third row should read “Ever smoked, %,” rather than “Smoker, %” as originally published. The authors regret the error.