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The age specific death rate (

The

It is denoted by q

Let D

The age specific death rate (

**ASDR**) is defined as the number of death in the interval divided by the number of individuals (precisely the person-year lived) by those alive at the midpoint of the interval. It is denoted by M_{x}.The

**probability**of death for age interval is defined as the number of deaths in the interval divided by the number of individuals living at the beginning of the interval.It is denoted by q

_{x}.**Relationship:**Let D

_{x}stand for the observed number of deaths in a community in the age interval (x, x+n) during a calendar year. Also let P_{x}be the number of people alive at age x of which D_{x}death occurs. Then age specific rate (M_{x}) is defined as-
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