First of all, the death rate of patients is 100%, they all die eventually. Despite the best intervention of any MD, people will smoke , drink eat the wrong stuff and pursue dangerous activities. There is no regulation on how the people run their lives.
Number of investigations ordered? A double edged sword as I find we are cancelling surgeries as bloodwork has been avoided and things are out of control when they get here and are cancelled.
Adverse events? Is poor compliance part of that or plain luck, we have more people taking more complex medications for more complex disease that ever before, and yes there are adverse effects but death is being delayed and people are choosing to live with the effects.
So everywhere they have gone to salaried or rostering, performance has fallen. FFS is a motivator but rather than throwing out the baby with the bathwater consider a blended system. If you offered me a salary, benefits , decent pension and most of all a union , I'm in.