I’m not sure if I agree with your use of the word “useful”, either, to be honest. If your aim is to prevent parents from unnecessary bereavements then looking at the breakdown of potentially preventable causes of death and working out strategies to limit the risk of them happening in future is far more “useful” than just taking the numbers as a whole. That’s why we have child death reviews. It is good to know, though, that child deaths continue to fall overall.