J
John J. Koval
Researcher at University of Western Ontario
Publications - 100
Citations - 5632
John J. Koval is an academic researcher from University of Western Ontario. The author has contributed to research in topics: Population & Poison control. The author has an hindex of 36, co-authored 98 publications receiving 5301 citations. Previous affiliations of John J. Koval include Centre for Addiction and Mental Health.
Papers
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Journal ArticleDOI
A comparison of methotrexate with placebo for the maintenance of remission in Crohn's disease. North American Crohn's Study Group Investigators.
Brian G. Feagan,Richard N. Fedorak,E J Irvine,Gary Wild,Lloyd R. Sutherland,A H Steinhart,Gordon R. Greenberg,John J. Koval,Cindy J. Wong,Marybeth Hopkins,Stephen B. Hanauer,John W.D. McDonald +11 more
TL;DR: In patients with Crohn's disease who enter remission after treatment with methotrexate, a low dose of methotRexate maintains remission.
Journal ArticleDOI
The Influence of Falling, Fear of Falling, and Balance Confidence on Prosthetic Mobility and Social Activity Among Individuals With a Lower Extremity Amputation
TL;DR: Clinicians and researchers should consider this variable in the rehabilitation of amputee patients the relationship between having fallen in the past 12 months, fear of falling, and balance confidence on mobility capability, mobility performance, and social activity.
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Gestational hypertension and preeclampsia in living kidney donors.
Amit X. Garg,Immaculate Nevis,Eric McArthur,Jessica M. Sontrop,John J. Koval,Ngan N. Lam,Ainslie M. Hildebrand,Peter P. Reese,Leroy Storsley,John S. Gill,Dorry L. Segev,Steven Habbous,Ann Bugeja,Greg Knoll,Christine Dipchand,Mauricio Monroy-Cuadros,Krista L. Lentine +16 more
TL;DR: Gestational hypertension or preeclampsia was more likely to be diagnosed in kidney donors than in matched nondonors with similar indicators of baseline health.
Journal ArticleDOI
The estimation of intraclass correlation in the analysis of family data.
Allan Donner,John J. Koval +1 more
TL;DR: The maximum likelihood estimator of the intraclass correlation coefficient rho in samples of unequal size from a multivariate normal distribution has been derived and compared to several other estimators, using Monte Carlo simulation.
Journal ArticleDOI
Does a relationship exist between body weight, concerns about weight, and smoking among adolescents? An integration of the literature with an emphasis on gender.
TL;DR: Recent studies examining weight concerns and youth smoking, with a focus on gender differences, indicated a positive relationship between smoking and body weight among adolescents, although not all studies found a positive association.