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Assessing inter-rater agreement of environmental audit data in a matched case-control study on bicycling injuries

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Author
Romanow, Nicole T.R.
Couperthwaite, Amy B.
McCormack, Gavin R.
Nettel-Aguirre, Alberto
Rowe, Brian H.
Hagel, Brent E.
Accessioned
2015-08-20T20:30:22Z
Available
2015-08-20T20:30:22Z
Issued
2013-01-30
Subject
Accidents, Traffic/statistics & numerical data
Adolescent
Adult
Bicycling/injuries
Case-Control studies
Child
Environment Design/statistics & numerical data
Observer variation
Public Health/methods
Type
journal article
Metadata
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Abstract
BACKGROUND: Environmental audit tools must be reliable in order to accurately estimate the association between built environmental characteristics and bicycling injury risk. OBJECTIVE: To examine the inter-rater agreement of a built environment audit tool within a case-control study on the environmental determinants of bicycling injuries. METHODS: Auditor pairs visited locations where bicycling injuries occurred and independently recorded location characteristics using the Systematic Pedestrian and Cyclist Environmental Scan (SPACES). Two case groups were defined: (1) where a bicyclist was struck by a motor-vehicle (MV) and (2) where the bicyclist's injuries required hospitalisation. The two corresponding control groups were (1) where non-MV bicycle-related injuries occurred and (2) where minor bicycle-related injuries occurred. Inter-rater reliability of each item on the tool was assessed using observed agreement and κ with 95% CI. RESULTS: Ninety-seven locations were audited. Inter-observer agreement was generally high (≥95%); most items had a 1-2% difference in responses. Items with ≥5% differences between raters included path condition, slope and obstructions. For land use, path and roadway characteristics, κ ranged from 0.3 for presence of offices and cleanliness to 0.9 for schools and number of lanes; overall, 78% of items had at least substantial agreement (κ≥0.61). For bicyclists struck by a MV the proportion of items with substantial agreement was 60%, compared with 73% for non-MV related injuries. For hospitalisations and minor bicycle-related injuries, 76% of items had substantial agreement. CONCLUSIONS: Agreement was substantial for most, but not all SPACES items. The SPACES provides reliable quantitative descriptions of built environmental characteristics at bicycling injury locations.
Refereed
Yes
Sponsorship
Alberta Centre for Child, Family, and Community Research (09SM-Hagel); Alberta Heritage Foundation for Medical Research (now Alberta Innovates-Health Solutions) establishment grant (200600336)
This article has been accepted for publication in BMJ Injury Prevention following peer review. The definitive copyedited, typeset version is available online at: http://injuryprevention.bmj.com/content/19/5/336.full.pdf+html. Post print version of article deposited according to BMJ license agreement http://journals.bmj.com/site/authors/Wholly_owned_licence_March_2014.pdf August 20, 2015.
 
Citation
Romanow, N. T., Couperthwaite, A. B., McCormack, G. R., Nettel-Aguirre, A., Rowe, B. H., & Hagel, B. E. (2013). Assessing inter-rater agreement of environmental audit data in a matched case-control study on bicycling injuries. Injury prevention, 19(5), 336-341.
Department
Kinesiology
Faculty
Cumming School of Medicine
Kinesiology
Institution
University of Calgary
Url
http://injuryprevention.bmj.com/content/19/5/336.abstract
Publisher
BMJ Publishing Group
Doi
http://dx.doi.org/10.1136/injuryprev-2012-040500
http://dx.doi.org/10.11575/PRISM/33738
Uri
http://hdl.handle.net/1880/50975
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