Shortening of an existing generic online health-related quality of life instrument for dogs

Reid, J., Wiseman-Orr, L. and Scott, M. (2018) Shortening of an existing generic online health-related quality of life instrument for dogs. Journal of Small Animal Practice, 59(6), pp. 334-342. (doi:10.1111/jsap.12772) (PMID:29023735)

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Abstract

Objective: Development, initial validation and reliability testing of a shortened version of a web-based questionnaire instrument to measure generic health-related quality of life in companion dogs, to facilitate smartphone and online use. Materials and Methods: The original 46 items were reduced using expert judgment and factor analysis. Items were removed on the basis of item loadings and communalities on factors identified through factor analysis of responses from owners of healthy and unwell dogs, intrafactor item correlations, readability of items in the UK, USA and Australia and ability of individual items to discriminate between healthy and unwell dogs. Validity was assessed through factor analysis and a field trial using a “known groups” approach. Test–retest reliability was assessed using intraclass correlation coefficients. Results: The new instrument comprises 22 items, each of which was rated by dog owners using a 7-point Likert scale. Factor analysis revealed a structure with four health-related quality of life domains (energetic/enthusiastic, happy/content, active/comfortable, and calm/relaxed) accounting for 72% of the variability in the data compared with 64% for the original instrument. The field test involving 153 healthy and unwell dogs demonstrated good discriminative properties and high intraclass correlation coefficients. Clinical Significance: The 22-item shortened form is superior to the original instrument and can be accessed via a mobile phone app. This is likely to increase the acceptability to dog owners as a routine wellness measure in health care packages and as a therapeutic monitoring tool.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Scott, Professor E Marian and Wiseman-Orr, Dr Margaret and Reid, Professor Jacqueline
Authors: Reid, J., Wiseman-Orr, L., and Scott, M.
College/School:College of Medical Veterinary and Life Sciences > School of Veterinary Medicine
College of Science and Engineering > School of Mathematics and Statistics > Statistics
Journal Name:Journal of Small Animal Practice
Publisher:Wiley
ISSN:0022-4510
ISSN (Online):1748-5827
Published Online:11 October 2017
Copyright Holders:Copyright © 2017 British Small Animal Veterinary Association
First Published:First published in Journal of Small Animal Practice 59(6): 334-342
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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