Some approaches may contribute to reducing (infant mortality).
Patterns of mortality may suggest that something-is-the-case.
A study can be constituted-of-or-filled-with (lung cancer mortality).
A (mortality study) can be constituted-of-or-filled-with some uranium.
Results may be reported as a standardized (mortality ratio).
(Mortality study) can be constituted-of-or-filled-with miners.