It is very uncertain whether exercise changes all‐cause mortality compared with no exercise (very low certainty).
Exercise showed no clear difference in all‐cause mortality ( compared with no exercise at the end of the intervention (low certainty).
It is very uncertain whether exercise changes all‐cause mortality ( compared with no exercise at longest available follow‐up (very low certainty).
Exercise‐based cardiac rehabilitation showed no clear difference in all‐cause mortality compared with 'no exercise' control (moderate certainty).
Exercise‐based cardiac rehabilitation showed no clear difference in all‐cause mortality compared with usual care (low certainty).
It is very uncertain whether exercise‐based cardiac rehabilitation changes all‐cause mortality compared with usual care (very low certainty).