Abstract
Among 5,000 consecutive deliveries there were 536 infants of low birth weight (401-2,500 gm). Those weighing more than 1,000 gm are analyzed according to stated gestational age and normal standards of birth weight for gestational age. The incidence of chronologically mature infants, and of those retarded in intrauterine growth, was determined for infants weighing 1,001-2,000 gm, 1,001-2,250 gm, and 1 001-2,500 gm. Perinatal mortality figures for the various types of infants of low birth weight are given.

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