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Growth and development of Negro infants. 2. Relation of birth weight, body length and epiphysial maturation to economic status



Growth and development of Negro infants. 2. Relation of birth weight, body length and epiphysial maturation to economic status



Amer. J. Dis. Child 80: 370-378



The subjects were 300 normal newborn negro infants, 164 male and 136 female, born between March 1948 and-September 1949. All were single births and weighed 5 1b. (2268 g.) or more; they were from mothers without known complication of pregnancy. Three economic classes were distinguished; private patients, hospital paying patients and free patients. Questions were asked about diet, but the only distinction considered reliable was between mothers whose average milk intake exceeded a litre or was less than 473 ml. Data are presented for mean bodyweight, crown-heel length and size of distal femoral and proximal tibial ossification centres for all infants, sexes separately, and for first-born infants, of whom there were more in the private patient class. There was no difference in any of the measurements with either social class or milk intake of the mothers.

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Accession: 013724260

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PMID: 14770452


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