Abstract
The correlation between the weight of the infant and the weight of the placenta, cord and membranes has been studied in 4129 instances. The instances were distributed in 2 main classes, one class consisting of fetuses weighing under 1500 gm. and the other class of infants weighing 1500 gm. or over. In the latter case males and females were analyzed separately.
In each case a positive correlation was found (approximately r = 0.5). A good fit to linear regression was observed, particularly in the case of infants weighing 1500 gm. or more. A critical survey was made of previously reported work in this field.
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