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An analysis of reproductive patterns in an American isolate.
Abstract The reproductive patterns of an American Anabaptist group with high birth rates and which apparently does not practise deliberate limitation of family size are characterized by shortExpand
Biologic assay of a thrombosis-inducing activity in human serum.
The systemic infusion of thrombin-free human serum induces massive thrombosis in rabbit vein segments containing stagnant blood far removed from the site of infusion. In contrast, carefully collect...
Effects on family size and sex ratio of preferences regarding the sex of children.
Abstract If the desired size of a family is specified in terms of sex composition, the sex preferences may affect eventual family size. Assuming that a couple wish to have a specified minimum numberExpand
Shall we count the living of the dead.
  • M. C. Sheps
  • Medicine
  • The New England journal of medicine
  • 18 December 1958
WHEN we wish to estimate the beneficial effect of a therapeutic agent, or the harmful effect of a factor such as exposure to radiation, we have the choice of a number of methods. If a new treatment...
On the Time Required for Conception
We omit the appendix, and sections of the paper discussing correlations between two successive conception delays and numerical results. (The maximum likelihood estimates for the mean and variance ofExpand
Truncation effect in closed and open birth interval data.
A numerical investigation using a flexible simulation model to establish interval analysis as an index for changing natality patterns. Such an index should reflect parity distribution, the age atExpand
On Estimating the Risk of Conception from Censored Data
Publisher Summary This chapter discusses current issues in the estimation of the risk of conception from censored data. An important approach, to evaluate the effectiveness of contraceptive programs,Expand
Pregnancy wastage as a factor in the analysis of fertility data
ResumenEsteestudio considera el efecto delas muertes fetales en las tasasdefecundidad y en lasinferencias derivadas de ellas, utilizando un modelo estocástico para la fecundidad humana. El modeloExpand
Estimators of a type I geometric distribution from observations on conception times
In order to study distributions of fecundability, Potter and Parker fitted a Pearson Type I geometric distribution (with parametersa andb) to data from the Princeton Fertility Study. They, andExpand
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