the death rate during the first year of life
the quality or state of being mortal
the ratio of deaths in an area to the population of that area; expressed per 1000 per year
a very young child (birth to 1 year) who has not yet begun to walk or talk
a magnitude or frequency relative to a time unit
amount of a charge or payment relative to some basis
assign a rank or rating to
the relative speed of progress or change
