Deceleration of age at menarche in Poland.

@article{Hulanicka1991DecelerationOA,
  title={Deceleration of age at menarche in Poland.},
  author={Barbara Hulanicka and A Waliszko},
  journal={Annals of human biology},
  year={1991},
  volume={18 6},
  pages={507-13}
}
The purpose of this paper is to describe secular growth changes in age at menarche of girls in Poland during the past 40 years. For this purpose data obtained from four consecutive surveys conducted in 1955, 1966, 1978 and 1988 were analysed. Each cohort was selected from settlements: big cities, small towns (approximately 10,000 inhabitants) and villages. Data regarding schoolgirls aged 7-18 years were collected by the status quo method. It was found that after the continuous trend towards an… CONTINUE READING

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