. Ciba Foundation colloquia on ageing. Old age; Aging; Animals -- growth & development. 24 Eeva Jalavisto of the decrease in mean length of Hfe is due to inconsistency in the distribution of young and old mothers. Whether other factors were operative, possibly in the reverse direction, during the earlier centuries is difficult to assess. It seems essential, therefore, to avoid calculation of the entire expecta- tion of life and to search for some other method of study. Maternal age: cTlI-^" < 25 years Expectation of life as function of age (years). 10 15 20 â âºAGEjx) 30 ^0 50 60 F
. Ciba Foundation colloquia on ageing. Old age; Aging; Animals -- growth & development. 24 Eeva Jalavisto of the decrease in mean length of Hfe is due to inconsistency in the distribution of young and old mothers. Whether other factors were operative, possibly in the reverse direction, during the earlier centuries is difficult to assess. It seems essential, therefore, to avoid calculation of the entire expecta- tion of life and to search for some other method of study. Maternal age: cTlI-^" < 25 years Expectation of life as function of age (years). 10 15 20 â âºAGEjx) 30 ^0 50 60 Fig. 3. Expectation of life (Ex) as function of age in the male progeny of young (40) mothers; first- born excluded. However in one respect the expectation of life calculated for each age and for different maternal age groups is instructive. Fig. 3 shows the expectation of life as a function of age for the progeny of young and old mothers (first-born excluded). It may be noted that from 6 years of age onwards the difference in expectation of life between the progeny of young and old mothers begins to diminish and between the ages of approxi- mately 15 to 40 years the difference is constant. This can be interpreted as evidence that at least in the middle-aged the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ciba Foundation; Wolstenholme, G. E. W. (Gordon Ethelbert Ward). Boston, Little, Brown
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Keywords: ., bookcentury1900, bookpublish, booksubjectaging, booksubjectoldage
