The intervention led to a small change in bike helmet use and a slightly larger change in seat belt use, but it did not lead to changes in alcohol variables or weapon carrying.
The intervention helped saved a lot of different lives. 
mnli hypothesis: The intervention helped saved a lot of different lives.  premise: The intervention led to a small change in bike helmet use and a slightly larger change in seat belt use, but it did not lead to changes in alcohol variables or weapon carrying.