Just an anecdotal;
My father in law and some of his family were convinced he didn't need an emergency button since he has a cell phone and speed dial. He has Parkinson's as well as vision problems and 87 years old, living on his own in an independent living apartment on the 2nd floor with an elevator. He refuses to use a walker or even a cane, saying he's not that old yet. (WTF is it with old people who insist that they aren't old at 80+ but everyone else that age is?) He has fallen several times, requiring stitches in his head or other medical attention each time.
So he decides to go check his mail, leaves his apartment and takes the elevator. All is well until he re-enters his apartment where he trips as he's closing the door. He laid there over 2 days because he didn't have his cell phone on him. He figured it was just a run to the mail box, what possible need would he have for it. My wife called him several times and finally called the local police for a wellness check. I want to add that he lives over 600 miles away from us, but has a daughter in the same town who puts her work life above caring for her father. (make of that as you will) He survived but only after a few days in the hospital and a few weeks in a rehab convalescent home. The medical team and social services state he can not live by himself, so he's gone to live with a sister in another state who is a registered nurse.
I warned my wife and I actually called and told him myself, when I found out he was refusing the cane and walker, that one day he WILL fall, he will never return to his home when he does fall and that he will be a HUGE burden on his family for his selfishness. His reply was that I was exaggerating and to butt out. It wasn't like he had mental issues, he chose to, refused to age gracefully and now his family are the ones made to suffer, having the tough decisions on what to do with him. Financially he's broke. His brothers bought out his life insurance policy as a loan listing them as the beneficiaries. This might supplement him enough with SS if he lives with family but not at any care facility. Of course my wife is beside herself over her father's condition and I'm pissed that his arrogance and selfishness is now going to cost me both financially and my own independence as we make decisions on his long term care.
If he had just been willing to use a cane or walker, have a dam button on his person, or even carry his phone, but no...
I pass along this story so that others out there with elderly parents or family that they might get saddled with will know the consequences of not absolutely insisting that their loved one wear an emergency call devise. It's not that they might die if they don't, it's that they might survive in a diminished capacity if they don't.