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OBJECTIVE To estimate whether singleton pregnancies following in vitro fertilization (IVF) are at higher risk of perinatal mortality, preterm delivery, small for gestational age, and low or very low birth weight compared with spontaneous conceptions in studies that adjusted for age and parity. DATA SOURCES We searched MEDLINE, BIOSIS, Doctoral(More)
CONTEXT Chorioamnionitis has been implicated in the pathogenesis of cerebral palsy, but most studies have not reported a significant association. Cystic periventricular leukomalacia (cPVL) is believed to be a precursor of cerebral palsy in preterm infants. OBJECTIVES To determine whether chorioamnionitis is associated with cerebral palsy or cPVL and to(More)
BACKGROUND AND PURPOSE Diffusion alterations have been identified in the corpus callosum and frontal white matter of patients infected with human immunodeficiency virus (HIV), though the relevance of these findings to cognitive deterioration has not yet been determined. This study tested the hypothesis that diffusion tensor imaging can detect tissue status(More)
CONTEXT Perinatal arterial ischemic stroke (PAS) is a common cause of hemiplegic cerebral palsy. Risk factors for this condition have not been clearly defined. OBJECTIVE To determine maternal and infant characteristics associated with PAS. DESIGN, SETTING, AND PATIENTS Case-control study nested within the cohort of all 199,176 infants born from 1997(More)
METHODS Using a California-wide hospital discharge database, the authors analyzed all first admissions for stroke in children 1 month through 19 years of age from 1991 through 2000. Incidence rates were estimated as the number of first hospitalizations divided by the person-years at risk; case fatality rates were based on in-hospital deaths. RESULTS The(More)
We describe five boys from different families with an atypically severe form of Pelizaeus-Merzbacher disease (PMD) who have three, and in one case, five copies of the proteolipid protein (PLP1) gene. This is the first report of more than two copies of PLP1 in PMD patients and clearly demonstrates that severe clinical symptoms are associated with increased(More)
BACKGROUND Few population-based studies of status epilepticus have been performed in the United States. OBJECTIVE To determine the incidence, case fatality, and demographics of generalized convulsive status epilepticus (GCSE) in the state of California. METHODS Using a state-wide hospital discharge database, the authors identified all hospitalizations(More)
OBJECTIVE Few data exist regarding rates and predictors of recurrence after childhood arterial ischemic stroke. We sought to establish such rates within a large, multiethnic population and determine whether clinical vascular imaging predicts recurrence. PATIENTS AND METHODS In a population-based cohort study, we collected data on all documented cases of(More)
OBJECTIVES To determine independent predictors of ambulation among children with cerebral palsy and to develop a simple tool that estimates the probability that a child will walk. METHODS In a retrospective study of all children with cerebral palsy who were not yet walking at 2 to 3(1/2) years of age, while receiving services from the California(More)
OBJECTIVE Chorioamnionitis is associated with increased risk for cerebral palsy (CP) in term infants. A functional polymorphism in the interleukin-6 (IL-6) gene has been implicated in newborn brain injury. We studied whether the IL-6 -174 G/C polymorphism confers increased risk for CP in term infants. METHODS This population-based case-control study(More)