I want to know the answer to the following question:
What would be the reduction in deisease incedence if there was better water and sanitation?
All the background I'm provided with is that "Similarly, a meta-analysis of numerous studies on improving water supply and sanitation shows a 22–27% reduction in disease incidence, and a 21–30% reduction in mortality rate associated with diarrheal disease.". Is that enough to answer the question?