https://bicycledutch.wordpress.com/2018 ... g-figures/
http://www.fietsberaad.nl/library/repos ... nd__1_.pdf
There is a link to the source of my quotes in the blogpost. Maybe you are not able to read this Dutch source, so I will translate the paragraph about the electric bicycles here:
“The use of electric bicycles has increased in recent years. Almost a quarter of all cyclists now uses an electric bicycle. Although the age of the users decreases, most users are elderly. In view of these developments, it is not surprising that the number of victims on electric bicycles is increasing and that four out of five victims on an electric bicycle were 55 years of age or older. However, when the analysis is corrected for the use (the users of an electric bicycle cycle more distance on average and more often than other cyclists), for age and for gender, it becomes apparent that the probability of an accident on an electric bicycle was not higher than on other types of bicycles. In addition, victims of an accident with an electric bicycle did not sustain more serious injuries on average.
The electric bicycle is in itself not more dangerous than other bicycles.