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BACKGROUND AND PURPOSE There is no reproducibility study of fractional anisotropy (FA) measurements at 3T using regions of interest (ROIs). Our purpose was to establish the extent and statistical significance of the interrater variability, the variability observed with 2 different b-values, and in 2 separate scanning sessions. MATERIALS AND METHODS Twelve(More)
BACKGROUND Reported associations between gestational tobacco exposure and autism spectrum disorders (ASDs) have been inconsistent. OBJECTIVE We estimated the association between maternal smoking during pregnancy and ASDs among children 8 years of age. METHODS This population-based case-cohort study included 633,989 children, identified using publicly(More)
PRIMARY OBJECTIVE The objective was to estimate and compare the hazards of repetitive traumatic brain injury (RTBI) events as a function of the index TBI severity, in a cohort of TBI hospital discharges include in the South Carolina Traumatic Brain Injury Follow-up Registry. RESEARCH DESIGN Retrospective cohort. METHODS AND PROCEDURES There were 4357(More)
Children with Autism often show difficulties in adapting to change. Previous studies of cortisol, a neurobiologic stress hormone reflecting hypothalamic-pituitary-adrenal (HPA) axis activity, in children with autism have demonstrated variable results. This study measured cortisol levels in children with and without Autism: (1) at rest; (2) in a novel(More)
Epidemiologic data on convulsive status epilepticus (CSE) is needed to develop preventative strategies. Epilepsy is one of the known risk factors for CSE. A systematic review of epidemiologic studies on status epilepticus (SE) completed in the United States and Europe reports that people with epilepsy account for less than 50% of cases of SE in all age(More)
BACKGROUND This study was designed to evaluate the hypothesis that the prevalence of autism spectrum disorder (ASD) among children in the United States is positively associated with socioeconomic status (SES). METHODS A cross-sectional study was implemented with data from the Autism and Developmental Disabilities Monitoring Network, a multiple source(More)
We evaluate the performance of the Dirichlet process mixture (DPM) and the latent class model (LCM) in identifying autism phenotype subgroups based on categorical autism spectrum disorder (ASD) diagnostic features from the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition Text Revision. A simulation study is designed to mimic the(More)
OBJECTIVE This review article provides an overview of the most recent developments in the literature regarding autism spectrum disorders including epidemiology, etiology, assessment, and management/treatment. METHOD A review of the recent literature was conducted using Medline and the search term "Autism Spectrum Disorders." RESULTS Autism Spectrum(More)
The treatment of malignant gliomas has advanced significantly in the past 15 years. The simultaneous development of new targeting agents and techniques to deliver these high-molecular-weight compounds has led to improved efficacy and promising results in Phase III trials. Convection-enhanced delivery (CED) of macromolecules has emerged as the leading(More)
BACKGROUND Traditional treatment in acute ischemic stroke is based on time criteria when administering intravenous and intra-arterial therapies. However, recent evidence suggests that image-based criteria may be useful for selecting patients for intra-arterial interventions. The use of CT perfusion (CTP)-based criteria, regardless of time from symptom(More)