Ethnoracial comparisons of intraclass correlations and mean gestation times in spontaneous abortion and perinatal death. A report of the Collaborative Study of Cerebral Palsy.

@article{Naylor1967EthnoracialCO,
  title={Ethnoracial comparisons of intraclass correlations and mean gestation times in spontaneous abortion and perinatal death. A report of the Collaborative Study of Cerebral Palsy.},
  author={Alfred F. Naylor},
  journal={American journal of obstetrics and gynecology},
  year={1967},
  volume={97 7},
  pages={
          931-5
        }
}
Abstract Data from the Collaborative Study indicate a statistical tendency for gestation times to be correlated from woman to woman among repeaters for spontaneous abortion and perinatal death. Correlations on the order of 0.3, which are similar for whites, Negroes, and Puerto Ricans, limit the hope that gestation time to fetal death will be of great diagnostic value. Negro women report a mean gestation time of one week longer than white women when fetal death occurs. 
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