Birth Weight and Future Life-span in Finnish Triplets

Johan Fellman, Aldur Eriksson

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review


Aims: Interest in the distribution of birth weight arises because of the association between birth weight and the future health of the child. A common statistical result is that the birth weight distribution differs slightly from the Gaussian distribution.
Methods: A standard attempt has been done to split the distribution into two components, a predominant Gaussian distribution and an unspecified “residual” distribution.
Results: We considered birth weight data among triplets born in Finland in 1905-1959 and compare the birth weight among stillborn and live-born triplets. The stillbirth rates are 119.1 per 1000 births for males, 124.6 for females and 121.8 for all. The sex differences are not significant. The still birth rate for the period 1905-1930 was 119.5 and for the period 1931-1959, 124.2. We identified a strong association between birth weight of the triplets and their survival. The weight distribution for male triplets is described well by the Gaussian curve, while for females a slight deviation from the Gaussian distribution is discernible.
Original languageEnglish
Title of host publicationInnovations in Medicine and Medical Research
EditorsWin Myint Oo
Number of pages8
Place of PublicationWest Bengal, India
PublisherBook Publisher International
Publication date2020
ISBN (Print)978-93-89562-64-4
ISBN (Electronic)978-93-89562-65-1
Publication statusPublished - 2020
MoE publication typeA3 Book chapter


  • 112 Statistics and probability
  • live-born
  • stillborn
  • normal distribution
  • regression models
  • infant mortality
  • Kolmogorov-Smirnov test


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