In the Original Investigation entitled “Autism Occurrence by MMR Vaccine Status Among US Children With Older Siblings With and Without Autism” published in the April 21, 2015, issue of JAMA,1 an incorrect description of when MMR vaccine was received and a number of minor errors in data were discovered after publication. A Letter to the Editor2 accompanies this Correction that fully explains the details and resolution of these errors. In addition, this article was corrected online.
Incorrect Variable Description. JAMA. 2016;315(2):204. doi:10.1001/jama.2015.17754