Short Paper

Demographic Determinants of the Sex Ratio at Birth in the Saguenay Population, Quebec

Marc Tremblay  By the same author

      Hélène Vézina  By the same author

      Louis Houde  By the same author


For most human populations the sex ratio at birth, defined as the number of male births per 100 female births, is around 105 (Cavalli-Sforza and Bodmer, 1971; Pressat, 1983; Henry and Blum, 1988; Sieff, 1990; Caselli and Vallin, 2001). Several biological mechanisms have been suggested to explain the remarkable constancy of this ratio. Nonetheless, notable variations from this mean value have (…)