So I want to learn your medical kit?!?!
There are plenty of threads on here about medical kits. There are also plenty of statistics about backcountry injuries/illness, with some of that info in those threads I believe.
This is somewhat of a thread derail, but what the heck. This is something that I kind of am passionate about.
I personally bring very little medically specific gear on solo outings within 10 miles of a trailhead, but instead bring a lot of items which are nonspecific and help prevent dehydration, getting lost, hypothermia, waterborne infection, disability & skin infection from chaffing, etc.; and only a few items which are more medically specific and help treat for instance a severe allergic reaction or a heart attack. In general in my opinion, except for a few items, having some basic first aid knowledge is far more important than having an expansive medical kit.
My main advice when reviewing the medical kit threads for yourself is to weigh all of the pertinent factors before putting something in your pack, just like with the rest of your gear...i.e. the people on the trip (e.g. their medical & accident history), the length of time of the trip, the proximity to other resources and communication, the enviornment, and the mission. And then make a choice about what to bring and what items could potentially have multiple uses...since you will be carrying them.
Here are some examples of decision making factors:
I am going to very likely bring a completely different kit for instance if I am the primary medical representative responsible for 3,000 people with a variety of past medical histories who are driving vehicles around in the dark while in the tropics, compared to putting together a kit for the medical representative going on an expedition with 4 guys trying to climb Denali. Or if there is a greater chance of someone in my team dying from suffocation in an avalanche than there is of shock due to massive external blood loss, then perhaps I should be bringing an avalanche probe over tourniquets and Quickclot. Just food for thought.