Deborah L. Christensen

Learn More
OBJECTIVE Early identification of children with autism spectrum disorder (ASD) facilitates timely access to intervention services. Yet, few population-based data exist on ASD identification among preschool-aged children. The authors aimed to describe ASD prevalence and characteristics among 4-year-old children in 5 of 11 sites participating in the 2010(More)
OBJECTIVE Population-based data in the United States on trends in cerebral palsy (CP) birth prevalence are limited. The objective of this study was to examine trends in the birth prevalence of congenital spastic CP by birth weight, gestational age, and race/ethnicity in a heterogeneous US metropolitan area. METHODS Children with CP were identified by a(More)
BACKGROUND The public health objective for cerebral palsy (CP) in the United States is to reduce the percentage of children with CP who were born low birthweight (LBW, <2500 g) by 10% between 2006 and 2020. This study reports the prevalence of CP in a constant surveillance area for the years 2006, 2008, and 2010 and describes initial progress towards the CP(More)
AIM The aim of this study was to report the prevalence and characteristics of children with cerebral palsy (CP). METHOD Children with CP (n=451) were ascertained by the Autism and Developmental Disabilities Monitoring (ADDM) Network, a population-based, record-review surveillance system monitoring CP in four areas of the USA. Prevalence was calculated as(More)
BACKGROUND Hospitalization for lower respiratory tract infections (LRTIs) among children have been well characterized. We characterized hospitalizations for severe LRTI among children. METHODS We analyzed claims data from commercial and Medicaid insurance enrollees (MarketScan) ages 0 to 18 years from 2007 to 2011. LRTI hospitalizations were identified by(More)
OBJECTIVE The objective of the study was to investigate the association between maternal self-reported infections, fever, and smoking in the prenatal period and the subsequent risk for congenital cerebral palsy (CP). STUDY DESIGN We included the 81,066 mothers of singletons born between 1996 and 2003 who participated in the Danish National Birth Cohort.(More)
In case-control studies, it is common for a categorical exposure variable to be misclassified. It is also common for exposure status to be informatively missing for some individuals, in that the probability of missingness may be related to exposure. Procedures for addressing the bias due to misclassification via validation data have been extensively(More)
BACKGROUND Cerebral palsy (CP) is a common motor disability in childhood. We examined the association between maternal infections during pregnancy and the risk of congenital CP in the child. METHODS Liveborn singletons in Denmark between 1997 and 2003 were identified from the Danish National Birth Registry and followed from 1 year of life until 2008.(More)
OBJECTIVES To characterize respiratory infection hospitalizations in children with neurologic disorders and to compare them with those of the general pediatric population. STUDY DESIGN We analyzed claims data from commercial insurance and Medicaid enrollees < 19 years of age from July 2006 to June 2011 who had ≥ 1 visit with an International(More)
The Autism and Developmental Disabilities Monitoring (ADDM) Network conducts population-based surveillance of autism spectrum disorder (ASD) among 8-year old children in multiple US sites. To classify ASD, trained clinicians review developmental evaluations collected from multiple health and education sources to determine whether the child meets the ASD(More)