yeah, the problem is the incidence is actually higher than 1:1000.
The pre-print paper had used an incorrect figure for the number of doses administered in Ottawa over that two-month period, however.
Between the week beginning May 30 and the week starting July 25, there had been 845,930 vaccines administered in the Ottawa region, according to data published by Ottawa Public Health, which is far greater than the figure used to calculate the incidence rate (32,379) ( here ).
The denominator (total vaccines administered over a two-month period in Ottawa) used to calculate the incidence rate of myocarditis in the pre-print study was approximately 25 times smaller than the correct figure.
The study was then withdrawn on September 24 and in a statement the researchers said: “Our reported incidence appeared vastly inflated by an incorrectly small denominator (ie number of doses administered over the time period of the study). We reviewed the data available at Open Ottawa and found that there had indeed been a major underestimation, with the actual number of administered doses being more than 800,000 (much higher than quoted in the paper)” ( archive.is/UCKQK ).
“In order to avoid misleading either colleagues or the general public and press, we the authors unanimously wish to withdraw this paper on the grounds of incorrect incidence data,” they added.
Meanwhile, numerous blog posts that reported on the study did not issue an update on these blogs regarding the retraction, nor did they mention that this study was a pre-print that had not been reviewed.