However, the numbers used by the study were wrong. The authors largely underestimated the amount of vaccines delivered, giving a number 25 times smaller than the actual amount.
They initially said that the number of vaccines delivered was 32,379 — when it was actually 854,930.
As a result of this miscalculation, the study was withdrawn on September 24 with the researchers saying in a statement: Our reported incidence appeared vastly inflated by an incorrectly small denominator (i.e. number of doses administered over the time period of the study).
A preprint study first uploaded to MedRxiv that claimed a 1 in 1,000 risk of contracting myocarditis from a COVID-19 vaccination has been withdrawn due to miscalculations.