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Application of survival analysis and multistate modeling to understand animal behavior: examples from guide dogs

Asher, Lucy; Harvey, Naomi D.; Green, Martin; England, Gary C.W.

Authors

LUCY ASHER lucy.asher@nottingham.ac.uk
Assistant Professor

Naomi D. Harvey

Martin Green

Gary C.W. England



Abstract

Epidemiology is the study of patterns of health-related states or events in populations. Statistical models developed for epidemiology could be usefully applied to behavioral states or events. The aim of this study is to present the application of epidemiological statistics to understand animal behavior where discrete outcomes are of interest, using data from guide dogs to illustrate. Specifically, survival analysis and multistate modeling are applied to data on guide dogs comparing dogs that completed training and qualified as a guide dog, to those that were withdrawn from the training program. Survival analysis allows the time to (or between) a binary event(s) and the probability of the event occurring at or beyond a specified time point. Survival analysis, using a Cox proportional hazards model, was used to examine the time taken to withdraw a dog from training. Sex, breed, and other factors affected time to withdrawal. Bitches were withdrawn faster than dogs, Labradors were withdrawn faster, and Labrador × Golden Retrievers slower, than Golden Retriever × Labradors; and dogs not bred by Guide Dogs were withdrawn faster than those bred by Guide Dogs. Multistate modeling (MSM) can be used as an extension of survival analysis to incorporate more than two discrete events or states. Multistate models were used to investigate transitions between states of training to qualification as a guide dog or behavioral withdrawal, and from qualification as a guide dog to behavioral withdrawal. Sex, breed (with purebred Labradors and Golden retrievers differing from F1 crosses), and bred by Guide Dogs or not, effected movements between states. We postulate that survival analysis and MSM could be applied to a wide range of behavioral data and key examples are provided.

Journal Article Type Article
Publication Date Jul 28, 2017
Journal Frontiers in Veterinary Science
Electronic ISSN 2297-1769
Publisher Frontiers Media
Peer Reviewed Peer Reviewed
Volume 4
Article Number 116
APA6 Citation Asher, L., Harvey, N. D., Green, M., & England, G. C. (2017). Application of survival analysis and multistate modeling to understand animal behavior: examples from guide dogs. Frontiers in Veterinary Science, 4, https://doi.org/10.3389/fvets.2017.00116
DOI https://doi.org/10.3389/fvets.2017.00116
Keywords epidemiology, survival analysis, multistate models, guide dogs, animal behavior
Publisher URL http://journal.frontiersin.org/article/10.3389/fvets.2017.00116/full
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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