T
Tanja Högg
Researcher at University of British Columbia
Publications - 6
Citations - 133
Tanja Högg is an academic researcher from University of British Columbia. The author has contributed to research in topics: Population & Diagnosis code. The author has an hindex of 4, co-authored 5 publications receiving 99 citations.
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Journal ArticleDOI
Health-care use before a first demyelinating event suggestive of a multiple sclerosis prodrome: a matched cohort study
José M.A. Wijnands,Elaine Kingwell,Feng Zhu,Yinshan Zhao,Tanja Högg,Karen Stadnyk,Okechukwu Ekuma,Xinya Lu,Charity Evans,John D. Fisk,Ruth Ann Marrie,Helen Tremlett +11 more
TL;DR: More frequent use of health care in patients with multiple sclerosis than in controls in the 5 years before a first demyelinating event, according to health administrative data, suggests the existence of a measurable multiple sclerosis prodrome.
Journal ArticleDOI
Mining healthcare data for markers of the multiple sclerosis prodrome.
Tanja Högg,José M.A. Wijnands,Elaine Kingwell,Feng Zhu,Xinya Lu,Charity Evans,John D. Fisk,Ruth Ann Marrie,Yinshan Zhao,Helen Tremlett +9 more
TL;DR: Findings provide insight into the clinical characteristics of the MS prodrome using data mining analytics in the healthcare setting and Adjusted odds ratios and Area under the Curve metrics for the models' predictive performance were reported.
Journal ArticleDOI
Interrogation of the Multiple Sclerosis Prodrome Using High-Dimensional Health Data.
Yinshan Zhao,José M.A. Wijnands,Tanja Högg,Elaine Kingwell,Feng Zhu,Charity Evans,John D. Fisk,Ruth Ann Marrie,Helen Tremlett +8 more
TL;DR: The overrepresentation of specific medications in MS cases, which was not fully explained by the physician diagnoses, may represent a signature of the MS prodrome.
Journal ArticleDOI
Bayesian analysis of pair-matched case-control studies subject to outcome misclassification.
TL;DR: A Bayesian model is proposed that relies on access to a validation subgroup with confirmed outcome status for all case-control pairs as well as prior knowledge about the positive and negative predictive value of the classification mechanism to adjust estimates for misclassification bias.
Journal ArticleDOI
Adjusting for differential misclassification in matched case-control studies utilizing health administrative data.
Tanja Högg,Yinshan Zhao,Paul Gustafson,John Petkau,John D. Fisk,Ruth Ann Marrie,Helen Tremlett +6 more
TL;DR: An approach to adjust exposure‐disease association estimates for disease misclassification, without the need of simplifying non‐differentiality assumptions, or prior information about a complicated classification mechanism is developed.