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Measuring safety climate in acute hospitals: Rasch analysis of the safety attitudes questionnaire

Overview of attention for article published in BMC Health Services Research, September 2016
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Title
Measuring safety climate in acute hospitals: Rasch analysis of the safety attitudes questionnaire
Published in
BMC Health Services Research, September 2016
DOI 10.1186/s12913-016-1744-4
Pubmed ID
Authors

Sze-Ee Soh, Anna Barker, Renata Morello, Megan Dalton, Caroline Brand

Abstract

The Safety Attitudes Questionnaire (SAQ) is commonly used to assess staff perception of safety climate within their clinical environment. The psychometric properties of the SAQ have previously been explored with confirmatory factor analysis and found to have some issues with construct validity. This study aimed to extend the psychometric evaluations of the SAQ by using Rasch analysis. Assessment of internal construct validity included overall fit to the Rasch model (unidimensionality), response formats, targeting, differential item functioning (DIF) and person-separation index (PSI). A total of 420 nurses completed the SAQ (response rate 60 %). Data showed overall fit to a Rasch model of expected item functioning for interval scale measurement. The questionnaire demonstrated unidimensionality confirming the appropriateness of summing the items in each domain. Score reliabilities were appropriate (internal consistency PSI 0.6-0.8). However, participants were not using the response options on the SAQ in a consistent manner. All domains demonstrated suboptimal targeting and showed compromised score precision towards higher levels of safety climate (substantial ceiling effects). There was general support for the reliability of the SAQ as a measure of safety climate although it may not be able to detect small but clinically important changes in safety climate within an organisation. Further refinement of the SAQ is warranted. This may involve changing the response options and including new items to improve the overall targeting of the scale. This study was registered with the Australian New Zealand Clinical Trials Registry, number ACTRN12611000332921 (21 March 2011).

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 106 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 106 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 20 19%
Researcher 11 10%
Student > Ph. D. Student 11 10%
Student > Postgraduate 8 8%
Student > Bachelor 6 6%
Other 20 19%
Unknown 30 28%
Readers by discipline Count As %
Nursing and Health Professions 26 25%
Medicine and Dentistry 22 21%
Social Sciences 7 7%
Psychology 5 5%
Economics, Econometrics and Finance 3 3%
Other 13 12%
Unknown 30 28%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 September 2016.
All research outputs
#18,800,225
of 23,299,593 outputs
Outputs from BMC Health Services Research
#6,628
of 7,797 outputs
Outputs of similar age
#244,736
of 321,650 outputs
Outputs of similar age from BMC Health Services Research
#169
of 196 outputs
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