"In the western world, the most common cause of death after trauma is severe brain injury."
Moreover, other than direct traumatic injury, the brain can be also damaged by ischemia: 4-6 minutes of cardiac arrest are typically enough to cause irreversible brain injury, and more than one hour will pretty much destroy the brain tissue.
According to that article:
"In modern day civilian trauma centres, thoracic injury directly accounts for 20-25% of deaths due to trauma; thoracic injury or its complications are a contributing factor in a further 25% of trauma deaths [24]."
"Aortic injuries cause or contribute to 15% of MVA fatalities[25]. Most patients with blunt aortic injury die before they reach hospital, and the vast majority will have major coexisting thoracic and extrathoracic injuries[26]."
I'm not a doctor, but if I understand correctly, this means that most victims of fatal accidents, even those without traumatic brain injury, will reach the hospital already in cardiac arrest or with some condition that will progress to cardiac arrest within few hours. I suppose that in order to arrange prompt cryopreservation you need at least 1 - 2 days of warning.
So, according to your stats, I would say that in the age group you consider, about 70% of deaths wouldn't allow prompt cryopreservation. Factor in the fact that you are unlikely to die in that age group anyway, and you cryonics at that age is probably not worth the cost, even assuming that it works as advertised.
Of course, this ultimately depends on how much you value your life versus your money: I suppose that manypeople have a knee-jerk reaction and say that they value their life an essentially infinite amount of money, but their actual preferences revealed by their spending behavior will probably be different.
At the end of CFAR's July Rationality Minicamp, we had a party with people from the LW/SIAI/CFAR community in the San Francisco Bay area. During this party, I had a conversation with the girlfriend of a participant in a previous minicamp, who was not signed up for cryonics (her boyfriend was). The conversation went like this:
me: So, you know what cryonics is?
her: Yes
me: And you think it's a good idea?
her: Yes
me: And you are not signed up yet?
her: Yes
me: And you would like to be?
her: Yes
me: Wait a minute while I get my laptop.
And I got my laptop, pointed my browser at Rudi Hoffman's quote request form1, and said, "Here, fill out this form". And she did.
The hard part of all that was identifying a cryocrastinator, by which I mean someone who believes they should be signed up for cryonics, but for whatever reason, hasn't actually signed up. Once I know that I am talking to such a person, just giving them an actionable first step to do right now gets them to do that step.
Previously to the party, I had held an "unconference" seminar for cryocrastinating minicampers in which I did a scaled up version of the same thing. For this I told everyone in advance to bring their own laptops, and I gave them the URL. (There was some confusion about the target audience of this seminar, and some people who were not yet convinced it was a good idea for them came expecting more of a discussion. They had no trouble expressing this, and were not required to fill out the form.) At the party, I did this for one other person2.
What I have observed to work so far is that people will take the first step of filling out the quote request form when I make it easy for them. I am counting on Rudi to get them through the rest of the process, so they end up actually signed up. Rudi has agreed to track success rates of these people getting through the whole process, and I plan to check in with him in early December, and report back.
I was planning to write this up when I had the full results, but seeing this story of a young woman with brain cancer forced to beg to raise funds at the last minute reminded me that cryocrastinators are running out of time (even though getting brain cancer young is rare, there are cryocrastinators of all ages who aren't aware of when life insurance will become unaffordable). So I thought it would be good to let people know now how easy it is to get that cryocrastinator you know to get started signing up.
Again, all you have to do is establish that they want to be signed up for cryonics but aren't, and put this form in front of them and tell them that filling it out is the first step. Rudi will take them through the rest of it. And if you yourself are cryocrastinating, take a few minutes for your first step in signing up by filling out the form.
(If you do not already think cryonics is a good idea, I do not expect you to follow any of the advice in this article. I wrote this for the benefit of all the people who do think cryonics is a good idea, but are having trouble actually signing up. You may be interested in trying to generalize the technique for other forms of procrastination, however.)
1. Yes, Rudi Hoffman will make some money off of this. He should, as he is putting in professional hours to provide a valuable service. But the motivation behind this article is to get people to sign up for cryonics. Other paths with other first steps are welcome, as is any advice for people outside the United States.
2. I am not naming the other people involved. They can opt in to identifying themselves if they want.