O
Ofer Harel
Researcher at University of Connecticut
Publications - 115
Citations - 3747
Ofer Harel is an academic researcher from University of Connecticut. The author has contributed to research in topics: Missing data & Imputation (statistics). The author has an hindex of 30, co-authored 113 publications receiving 3156 citations. Previous affiliations of Ofer Harel include University of Washington.
Papers
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Journal ArticleDOI
Multiple imputation: review of theory, implementation and software.
Ofer Harel,Xiao-Hua Zhou +1 more
TL;DR: This tutorial provides an overview and combines together the theory behind MI, the implementation of MI, and discusses increasing possibilities of the use of MI using commercial and free software.
Journal ArticleDOI
The estimation of R 2 and adjusted R 2 in incomplete data sets using multiple imputation
TL;DR: In this paper, the authors introduce the use of multiple imputation for the estimation of R 2 and adjusted R 2 in incomplete data sets and illustrate their methodology using a biomedical example.
Journal ArticleDOI
Maternal Consumption of a Docosahexaenoic Acid-Containing Functional Food During Pregnancy: Benefit for Infant Performance on Problem-Solving but Not on Recognition Memory Tasks at Age 9 Mo
TL;DR: Data point to a benefit for problem solving but not for recognition memory at age 9 mo in infants of mothers who consumed a DHA-containing functional food during pregnancy.
Journal ArticleDOI
The Impact of Screening, Brief Intervention, and Referral for Treatment on Emergency Department Patients' Alcohol Use
Edward Bernstein,Judith Bernstein,James A. Feldman,William G. Fernandez,Melissa J. Hagan,Patricia M. Mitchell,Clara Safi,Robert Woolard,M.J. Mello,Janette Baird,Cristina Lee,Shahrzad Bazargan-Hejazi,Brittan A. Durham,Kerry B. Broderick,Kathryn A. LaPerrier,Arthur L. Kellermann,Marlena M. Wald,Robert E. Taylor,Kim Walton,Michelle Grant-Ervin,Denise Rollinson,D. P. Edwards,Theodore C. Chan,Daniel Davis,J. Marshall,Robert H. Aseltine,Amy James,Elizabeth A. Schilling,Khamis Abu-Hasaballah,Ofer Harel,Brigitte M. Baumann,Edwin D. Boudreaux,Ronald F. Maio,Rebecca M. Cunningham,Teresa Murrell,David Doezema,Michael Bauer,Deirdre Anglin,Adriana Eliassen,Marcus L. Martin,Jesse M. Pines,Leslie Buchanan,James C. Turner,Linda C. Degutis,Patricia H. Owens,Gail D'Onofrio +45 more
Journal ArticleDOI
Principled Approaches to Missing Data in Epidemiologic Studies.
Neil J. Perkins,Stephen R. Cole,Ofer Harel,Eric J. Tchetgen Tchetgen,BaoLuo Sun,Emily M. Mitchell,Enrique F. Schisterman +6 more
TL;DR: The deleterious effects of missing data with naive methods are illustrated and how principled methods can sometimes mitigate such effects and call for greater acknowledgement of and attention to missing data and for the broad use of principled missing-data methods in epidemiologic research.