"Infant mortality" plays a big role in life expectancy. The dividing line between a stillbirth and infant mortality can be a very fine line and varies widely i

"Infant mortality" plays a big role in life expectancy. The dividing line between a stillbirth and infant mortality can be a very fine line and varies widely in the developed world. Strangely enough, the combined term (stillbirth + infant mortality) doesn't vary nearly as much. That says there's a big data problem with counting infant mortality, and thus a big data problem with life expectancy.