HelloIn my friend's case I strongly suspect that the hospital clinicians had something to do with the decision. As well as the admissions there were other paramedic visits (following falls) which did not lead to my friend going hospital. I was on holiday at the time and so I don't know the exact position but I think that my friend had four or more falls in a single week before her last admission to hospital.
Care homes can't prevent all falls but they will know or have some idea about what happened and there won't be the risk of a 'long lie'.
Yes the risk is there always wherever someone is. In the home there is a mat on the floor which is highly sensitive as well as a call bell system. Dad didn't need to do anything as the alarm was triggered when he fell down so as you say someone was straight there and the 'long lie' did not happen. The risk in my personal view is higher at home for dad living alone, four calls a day each of what 30 mins duration and then over night? The cost of 'live in' care I cannot begin to imagine however we may have to investigate that I guess if the coming home thing is likely. Four and more falls for your friend sounds horrific xx