@tegeus-Cromis
I suspect these figures are based on dodgy if not swampy grounds.
Whilst it's true that no one was sticking their fingers in electric sockets there must thousands that died in circumstances that were classed as murder rather than accidental.
Take for example the case of Sir Grungstock of Boltchester.
His death, typical of such popular gatherings, who, while burying his poleaxe into the skull of a revolting peasant (never cleaned his feet) was tragically unhorsed by an overhanging tree branch. Even though he was wearing the correct PPE (a stylish helmet made by the metalworkers of Rouen) he sadly fell backwards and broke his neck. Obviously, and without doubt it was accidental but his death was wrongly classified as "Death by Misadventure".
On the other side of the pond (as it were) how many of those witches that died in their "Trial by Water" were grouped in the "accidental drowning" column even though it was obviously an act of deliberate murder. Worse, imagine how frustrating it would feel, as you gulped your last mouthful, to know that your death would be put down to your inability to swim.
There are numerous such examples where tardy officials went for the easy option, rather than fully investigate the true cause of death. It was partly because of such glaring errors in the death statistics, that the Coroners court was introduced in the eighteenth century England. A momentous advance in social justice that the world always fails to accredit to these fine islands.
It's thanks to these reforms that peasants and serfs, and even, the Lords of the land, have since been correctly recorded in the system.