Age at last birth and span of childbearing: estimates using vital statistics data.

In the research reported in this paper we develop and apply techniques to obtain the distributions of ages at first and last births and the span of childbearing years based on age-specific birth and death rates known from [U.S.] vital statistics [for 1903-1942 cohorts]. We also use this method to project age at completion of childbearing for cohorts [1943-1960] which have not yet passed their reproductive period. (EXCERPT)