Social background and age at menarche in Portuguese university students: a note on the secular changes in Portugal.

  • Cristina Padez
  • Published 2003 in
    American journal of human biology : the official…


Menarcheal age of a sample of Portuguese university students (n = 3366), born between 1972 and 1983, age 18-23 years, was analyzed. The influence of parents' educational level and occupation, family size, birth order, and degree of urbanization of girl's locality of residence during childhood and adolescence were analyzed as well as secular trend in the… (More)


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