Sichona, Francis J. (1993). The Polygyny Fertility Hypothesis Revisited--The Situation in Ghana. Journal of Biosocial Science, 25(4)
Re-examination of the polygyny-fertility hypothesis, by multiple regression analysis of the 1988 Ghana DHS data, reveals that polygyny has no effect on the number of children ever born; i.e. polygynously married women are as fertile as those monogamously married. Husband's age has no significant role in determining the number of children ever born to a woman.
Journal of Biosocial Science
Sichona, Francis J.