glossary    * T *
Demographical and statistical terms Symbols
total divorce rate
is the summation of the age-specific divorce rate and is defined for men or women. This rate is an indicator of a synthetic cohort giving the total number of divorces a men or a woman experiences on average throughout life based on observed period rates.
 
total numbers years
is the number of person-years lived at age x and older.
T x
total reproduction rate (or total fertility rate)
is the summation of the series of age-specific fertility rates, or the average number of children that would be born alive to a hypothetical cohort of women if, throughout their reproductive years, the age-specific rates for the specified year remained unchanged.
TFR
true rate of natural increase r
see: intrinsic rate of natural increase.
 

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