I could see an argument that knowing the statistics could help the CPR-giver in the aftermath. After all the patient is very likely to die and if the CPR-giver

I could see an argument that knowing the statistics could help the CPR-giver in the aftermath. After all the patient is very likely to die and if the CPR-giver was under the impression that it is likely to work, then they may feel a lot of unwarranted guilt.