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the ratio of births to deaths within a population during a given time.
Farlex Partner Medical Dictionary © Farlex 2012
vi·tal index(vī'tăl in'deks)
The ratio of births to deaths within a population during a given time.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
The ratio of the number of births to the number of deaths in a population over a stated period of time.
See also: index
Medical Dictionary, © 2009 Farlex and Partners