Complete bull. Wonder why none of these scholars in the acedemic peer reviewers recognized the gross error on the input data? MTO stats for 2016 show 1631 injuries for 220,000 registered motorcycles, or 727/100,0000 registered motorcycles. That's about 3 times less than the noted study which lists the number at 2194/100K registrations - a discrepency worth investigating I would think.
Do these people get paid to do this?
see MTO results at : http://www.mto.gov.on.ca/english/publications/pdfs/preliminary-2016-orsar-selected-statistics.pdf.
Gah, typed out a big reply and internal server error 500 threw it out for me.
TLDR: ORSAR looks mainly at police and coroner reports and for beginning of 2007 to end of 2012, MC injuries totaled 10,211. Academic report shows 26,831 injuries. Some of the difference of could easily be explained by crashes that police never knew about. Are almost 2/3 of MC injuries in crashes unreported to police? That seems high.
Statscan shows 153K to 210K MC registrations during that period. The primary reason for the huge discrepancy in injuries/100K vehicles between the study and your quick math (and a detailed look at previous ORSAR data) is the study attributed many more injuries to MC. I would be inclined to think that triage nurses will capture a realistic cause of injury and therefore the study is more accurate?