Risk of previous very low birth weight and very preterm infants among women delivering a very low birth weight and very preterm infant

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Abstract

OBJECTIVE: To examine the relationship of the birth of a very low birth weight (VLBW, < 1500 gm) and very preterm (VPT, ≤ 32 week) infant to previous occurrences of VLBW-VPT infants among women who had two to five pregnancies. STUDY DESIGN: This was a case-control study using data from the 1988 National Maternal and Infant Health Survey (NMIHS). A case was defined as a singleton live birth weighing 500 to 1499 gm with a gestational age of ≤32 weeks. Control infants were defined as singleton births weighing >2500 gm with gestational ages of ≥38 weeks. RESULTS: There were 128 non-black cases and 864 non-black controls, and 241 black cases and 1205 black controls available for analysis. Logistic regression was used to adjust for a history of previous stillbirth, mother's birth weight, pre-pregnancy weight, pregnancy interval, and sociodemographic risk factors. The adjusted odds ratio for the occurrence of a previous VLBW-VPT birth for non-black cases versus controls was 21.24 (6.87, 65.7) and for black cases versus controls, 6.87 (3.82,12.34). CONCLUSION: These results confirm the substantial risk of previous VLBW-VPT infants among women giving birth to such an infant, independent of sociodemographic factors and other prior pregnancy outcomes.

Original languageEnglish (US)
Pages (from-to)97-102
Number of pages6
JournalJournal of Perinatology
Volume19
Issue number2
StatePublished - Mar 1999

Fingerprint

Very Low Birth Weight Infant
Premature Infants
Parturition
Birth Intervals
Stillbirth
Pregnancy Outcome
Birth Weight
Gestational Age
Logistic Models
Odds Ratio
Mothers
Weights and Measures
Pregnancy

ASJC Scopus subject areas

  • Obstetrics and Gynecology
  • Pediatrics, Perinatology, and Child Health

Cite this

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title = "Risk of previous very low birth weight and very preterm infants among women delivering a very low birth weight and very preterm infant",
abstract = "OBJECTIVE: To examine the relationship of the birth of a very low birth weight (VLBW, < 1500 gm) and very preterm (VPT, ≤ 32 week) infant to previous occurrences of VLBW-VPT infants among women who had two to five pregnancies. STUDY DESIGN: This was a case-control study using data from the 1988 National Maternal and Infant Health Survey (NMIHS). A case was defined as a singleton live birth weighing 500 to 1499 gm with a gestational age of ≤32 weeks. Control infants were defined as singleton births weighing >2500 gm with gestational ages of ≥38 weeks. RESULTS: There were 128 non-black cases and 864 non-black controls, and 241 black cases and 1205 black controls available for analysis. Logistic regression was used to adjust for a history of previous stillbirth, mother's birth weight, pre-pregnancy weight, pregnancy interval, and sociodemographic risk factors. The adjusted odds ratio for the occurrence of a previous VLBW-VPT birth for non-black cases versus controls was 21.24 (6.87, 65.7) and for black cases versus controls, 6.87 (3.82,12.34). CONCLUSION: These results confirm the substantial risk of previous VLBW-VPT infants among women giving birth to such an infant, independent of sociodemographic factors and other prior pregnancy outcomes.",
author = "Michael Malloy",
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journal = "Journal of Perinatology",
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N2 - OBJECTIVE: To examine the relationship of the birth of a very low birth weight (VLBW, < 1500 gm) and very preterm (VPT, ≤ 32 week) infant to previous occurrences of VLBW-VPT infants among women who had two to five pregnancies. STUDY DESIGN: This was a case-control study using data from the 1988 National Maternal and Infant Health Survey (NMIHS). A case was defined as a singleton live birth weighing 500 to 1499 gm with a gestational age of ≤32 weeks. Control infants were defined as singleton births weighing >2500 gm with gestational ages of ≥38 weeks. RESULTS: There were 128 non-black cases and 864 non-black controls, and 241 black cases and 1205 black controls available for analysis. Logistic regression was used to adjust for a history of previous stillbirth, mother's birth weight, pre-pregnancy weight, pregnancy interval, and sociodemographic risk factors. The adjusted odds ratio for the occurrence of a previous VLBW-VPT birth for non-black cases versus controls was 21.24 (6.87, 65.7) and for black cases versus controls, 6.87 (3.82,12.34). CONCLUSION: These results confirm the substantial risk of previous VLBW-VPT infants among women giving birth to such an infant, independent of sociodemographic factors and other prior pregnancy outcomes.

AB - OBJECTIVE: To examine the relationship of the birth of a very low birth weight (VLBW, < 1500 gm) and very preterm (VPT, ≤ 32 week) infant to previous occurrences of VLBW-VPT infants among women who had two to five pregnancies. STUDY DESIGN: This was a case-control study using data from the 1988 National Maternal and Infant Health Survey (NMIHS). A case was defined as a singleton live birth weighing 500 to 1499 gm with a gestational age of ≤32 weeks. Control infants were defined as singleton births weighing >2500 gm with gestational ages of ≥38 weeks. RESULTS: There were 128 non-black cases and 864 non-black controls, and 241 black cases and 1205 black controls available for analysis. Logistic regression was used to adjust for a history of previous stillbirth, mother's birth weight, pre-pregnancy weight, pregnancy interval, and sociodemographic risk factors. The adjusted odds ratio for the occurrence of a previous VLBW-VPT birth for non-black cases versus controls was 21.24 (6.87, 65.7) and for black cases versus controls, 6.87 (3.82,12.34). CONCLUSION: These results confirm the substantial risk of previous VLBW-VPT infants among women giving birth to such an infant, independent of sociodemographic factors and other prior pregnancy outcomes.

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