Evolución de la edad de menarquía en Cataluña (1909-1965)

Abstract

In this paper, the evolution of age at menarche in a sample of 5500 catalan women, born between 1909 and 1965, has been analyzed. The maximum menarcheal age in Catalonia (13.71 years) is found among those women born between 1925 and 1929 and the minimum menarceal age (12.75 years) among women born between 1950 and 1954. In a interval of 25 years a reduction of 11.52 months (4.61 months per decade) has taken place. It may be considered that, in general, the evolution of the socioeconomic conditions has been the decisive factor in the change in growth and maduration of the population.