This number is shocking, but it is not weighted by usage. Just because a medical treatment is a treatment doesn’t mean it’s in common use. On top of that, I fi

This number is shocking, but it is not weighted by usage. Just because a medical treatment is a treatment doesn’t mean it’s in common use. On top of that, I find it 100% believable that doctors use understudied treatments. The reverse makes a lot more sense. Treatments get studied after people have tried them, and believe they warrant further study and more frequent usage. Consider coronavirus treatments, at first we had very little idea what to do, beyond inferring based on past virus with a similar symptom profile and reasoning from first principles. Later on, we slowly but surely identified effective treatments (corticosteroids/prone position/...) after people tried them. Even later, we had descriptive studies of past effectiveness. I assume most treatments go through a similar progression (covid treatments go through this progression on fast forward). Medical studies are slow and retrospective. Fundamentally that gets you this 1/10 figure.