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Created on : 30 Mar 2004
Modified on : 02 Dec 2007

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Bibliographical entry (without author) :

Sudden Infant Death Syndrome among Extremely Preterm Infants: United States 1997-1999. Journal of Perinatology 2004;24(3):181-187.

Author(s) :

Malloy MH.

Year of publication :


URL(s) :…

Résumé (français)  :

Abstract (English)  :

BACKGROUND: Preterm infants have been reported to be at higher risk than term infants for sudden infant death syndrome (SIDS). Reasons for this higher risk are not clear.

OBJECTIVE: The objective of this study was to analyze medical and demographic characteristics among infants 24 to 32 weeks gestation to identify characteristics more prevalent among infants dying of SIDS in the postneonatal period than among infants of similar gestation who survived or who died of other causes in the postneonatal period.

DESIGN/METHODS: United States linked birth and death certificate period data for 1997 to 1999 were used for this analysis. The population used was limited to infants 24 to 32 weeks gestation weighing 500 to 2500 g. SIDS deaths were limited to the postneonatal period and compared to survivors and infants dying in the postneonatal period of other causes.

RESULTS: There were 469 postneonatal SIDS deaths with complete data (rate=2.2/1000 live births surviving 28 days); 3950 other postneonatal deaths (rate=18.7/1000) and 206,640 survivors. Compared with survivors, infants dying of SIDS were more likely to be born to mothers with <12 years of education (odds ratio=2.5, 95% confidence interval (95% CI=1.8, 3.3); be born to mothers 17 years of age (OR=2.0, 95% CI=1.4, 2.8); and be born to mothers with >3 previous pregnancies (OR=2.6, 95% CI=1.9, 3.5). Compared with infants dying in the postneonatal period of other causes, these same demographic factors continued to be significant risk factors for SIDS. There were no medical risk factors such as breech presentation, abruptio placenta, Apgar score <4 at 5 minutes, or mechanical ventilation for >30 minutes after birth, for which infants dying of SIDS were at greater risk than survivors or infants dying of other causes.

CONCLUSIONS: Risk factors for SIDS among infants 24 to 32 weeks gestation appear to be more associated with sociodemographic characteristics than medical characteristics. This suggests that for the immediate future, the risk for SIDS among very preterm infants will be best addressed through further modification of the environment and parent behavior.

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Keywords :

➡ premature baby ; cot death

Author of this record :

Cécile Loup — 30 Mar 2004

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