Affiliation:
1. Newborn Services Department, George Washington University Medical Center and Children's National Medical Center, Washington, DC
Abstract
OBJECTIVE:
The goal was to examine the association of gender with intraventricular hemorrhage (IVH) or periventricular leukomalacia (PVL) in a large national database.
METHODS:
The National Inpatient Sample database was analyzed for the years 1998, 1999, 2001, 2002, and 2004 and its pediatrics version for the years 1997, 2000, and 2003. The National Inpatient Sample and its pediatrics version are annually collected databases for inpatient admissions from >1000 hospitals across the United States. We included all very low birth weight (VLBW) infants (birth weight [BW] of <1500 g) and excluded infants with major congenital anomalies. VLBW infants with IVH or PVL were identified by using International Classification of Diseases, Ninth Revision, diagnostic codes. We analyzed the data by using χ2 and Fisher's exact tests to calculate odds ratios (ORs) and logistic regression analysis to control for possible confounders.
RESULTS:
The data included 104 847 VLBW infants. With controlling for significant confounders, IVH was associated with male gender (15.9% vs 13.6%; adjusted OR [AOR]: 1.15 [95% confidence interval: 1.11–1.19]; P < .001). More boys than girls had severe IVH (38% vs 32.7%; AOR: 1.18 [95% confidence interval: 1.06–1.32]; P < .004). The increased rates of IVH and severe IVH in boys were significant in the BW subgroups of <1000 g and 1000 to 1499 g. The association of male gender with IVH and severe IVH was more significant in infants of 1000 to 1499 g (AOR: 1.19 vs 1.14; P = .006). The incidence of PVL in VLBW infants was 0.41%, and rates did not differ between genders (0.38% vs 0.43%; P = .42).
CONCLUSIONS:
Compared with girls, VLBW male newborns are at greater risk to develop IVH and severe IVH but not PVL. The association of male gender with IVH or severe IVH is stronger with higher BWs.
Publisher
American Academy of Pediatrics (AAP)
Subject
Pediatrics, Perinatology, and Child Health
Reference35 articles.
1. Intracranial hemorrhages and vascular lesions;de Vries,2006
2. Intracranial hemorrhages;Hill,2005
3. Sex differences in outcomes of very low birthweight infants: the newborn male disadvantage;Stevenson;Arch Dis Child Fetal Neonatal,2000
4. Fetal sex and preterm birth: are males at greater risk?;Zeitlin;Hum Reprod,2002
5. Discordance between male and female deaths due to the respiratory distress syndrome;Perelman;Pediatrics,1986
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