Hi Monty. don't think I referred to this as a cost, but in my "high risk" data set yes, he is in there. He is over 70 and has diabetes so he's definitely in there!
Keep in mind I'm looking strictly at deaths, not the likelihood of who can get it. I don't know that but I'd guess it depends on your level of exposure regardless of age or health condition. As to your 71 year old straw man keep in mind that I am talking about everyone. I have no idea if your Dad, sorry, person will die. Out of this set 996 of 1000 who contract the virus survive. So his odds are still good, but not a 999 out of 1000 survival rate like the 'lucky' ones outside that group. It's like Life Insurance companies. If they have a large sample they can be pretty accurate as to how many of their 71 year old policyholders will die... they just don't know which ones specifically.
You could get more granular in the data if you want to scare the **** out of folks. I'll bet a set of 95 year old folks with diabetes, lung cancer and COPD have a much higher Death Rate, but those are the parameters I set to make my point.
It's a horrific, lonely death. Something your 71 year old should consider as he lives his daily life. Maybe he doesn't go to that stuffy concert hall to see the Fleetwood Mac tribute band. We'll know more about seasonal effects but I'll bet you should be more on your guard in autumn/winter. Maybe he doesn't hug friends at the Temple. Maybe he takes to wearing a mask everywhere. At least it's his choice, not the government or the Corona Police.