Statistical Analysis of Trend of Age Distribution of Mothers Delivered of Down's Syndrome

@inproceedings{Tanaka1967StatisticalAO,
  title={Statistical Analysis of Trend of Age Distribution of Mothers Delivered of Down's Syndrome},
  author={Ryozo Tanaka and Setsu Hashimoto and Sempatsuro Nakadate and Hina Sato},
  year={1967}
}
After studying the age distribution of 314 mothers delivered of Down's syndromers in Tokyo during the period from 1938 to 1958, Tsubakihara has reported that the modeof their age found to be above 40 years in the biginning and gradually moved to younger side since 1954, finally being under 30 years from 1954 onward. She ascribed suchtrend to some change of environmental factors which might raise the incidence of Down's syndrome among the children born by younger mothers. The trend of… CONTINUE READING

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