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Is the Accuracy of Prior Preterm Birth History Biased by Delivery Characteristics?

Abstract  

To assess the sensitivity of birth certificates to preterm birth history and determine whether omissions are randomly or systemically
biased. Subjects who experienced a preterm birth followed by a subsequent pregnancy were identified in a regional database.
The variable “previous preterm birth” was abstracted from birth certificates of the subsequent pregnancy. Clinical characteristics
were compared between subjects who were correctly versus incorrectly coded. 713 subjects were identified, of whom 65.5% were
correctly coded in their subsequent pregnancy. Compared to correctly coded patients, patients who were not correctly identified
tended to have late and non-recurrent preterm births or deliveries that were secondary to maternal or fetal indications. A
recurrence of preterm birth in the subsequent pregnancy was also associated with correct coding. The overall sensitivity of
birth certificates to preterm birth history is suboptimal. Omissions are not random, and are associated with obstetrical characteristics
from both the current and prior deliveries. As a consequence, resulting associations may be flawed.

  • Content Type Journal Article
  • Pages 1-6
  • DOI 10.1007/s10995-011-0882-x
  • Authors
    • David N. Hackney, Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, University of Rochester Medical Center, 601 Elmwood Ave, Rochester, NY 14642, USA
    • Danielle E. Durie, Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, University of Rochester Medical Center, 601 Elmwood Ave, Rochester, NY 14642, USA
    • Ann M. Dozier, Department of Community and Preventive Medicine, University of Rochester Medical Center, Rochester, NY, USA
    • Barbara J. Suter, Department of Community and Preventive Medicine, University of Rochester Medical Center, Rochester, NY, USA
    • J. Christopher Glantz, Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, University of Rochester Medical Center, 601 Elmwood Ave, Rochester, NY 14642, USA
    • Journal Maternal and Child Health Journal
    • Online ISSN 1573-6628
    • Print ISSN 1092-7875
Posted in: Journal Article Abstracts on 09/26/2011 | Link to this post on IFP |
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