The effect of variability in the fertility schedule on numbers of kin.

J. Coresh, N. Goldman

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


"The kinship formulas developed by Goodman, Keyfitz, and Pullum (1974) are extended to encompass populations in which fertility varies among women. An expression is derived to determine the amount by which the number of sisters in a heterogeneous population exceeds that in a population with homogeneous fertility. This expression, which is a function of the variance in the gross reproduction rate of the population, can readily be applied to numbers of other kin, such as aunts and cousins. Several trial calculations indicate that calculations of average numbers of sisters based on an assumption of uniform fertility could result in a underestimate of about 13 percent." (SUMMARY IN FRE) excerpt

Original languageEnglish (US)
Pages (from-to)137-156, 207
JournalMathematical Population Studies
Issue number2
StatePublished - 1988
Externally publishedYes

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Geography, Planning and Development
  • Demography


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