And the evidence will change over time. Paul Hunter, professor of medicine at the University of East Anglia, points out that death rates could go down as well as up. "With Ebola, they came down ...

Life expectancy is the average number of years that a person would live if he or she experienced the age-specific death rates that occurred at a particular point in time. As death rates decline ...

Yet the average maternal mortality rate among the 37 other countries accounted for in the data has declined over the same time period. "Clearly the US is an outlier," said Joan Costa-i-Font ...