As someone who emigrated from the US to New Zealand (where we have a socialised medicine system), I'm curious about the relationship between those survival rate

As someone who emigrated from the US to New Zealand (where we have a socialised medicine system), I'm curious about the relationship between those survival rates, and the related diagnoses. Here in NZ, it seems like there's much less hesitation in a person going to the doctor in the first place, compared to the US, and I'd imagine that has some positive impact on the population. Perhaps there is a tradeoff between treatment of complex conditions, and treatment of more frequent but less complex conditions?