• Els Devriendt, Koen Van den Heede, Joke Coussement, Eddy Dejaeger, Kurt Surmont, Dirk Heylen, René Schwendimann, Bryan Sexton, Nathalie I H Wellens, Steven Boonen, and Koen Milisen.
• Center for Health Services and Nursing Research, Katholieke Universiteit Leuven, Leuven, Belgium. els.devriendt@med.kuleuven.be
• Int J Nurs Stud. 2012 Mar 1; 49 (3): 327-37.

BackgroundPatient safety is fundamental to healthcare quality. Attention has recently focused on the patient safety culture of an organisation and its impact on patient outcomes. A strong safety climate appears to be an essential condition for safe patient care in the hospital. A number of instruments are used to measure this patient safety climate or culture. The Safety Attitudes Questionnaire is a validated, widely used instrument to investigate multiple dimensions of safety climate at the clinical level in a variety of inpatient and outpatient settings.ObjectivesThe purpose of this study is to explore the face- and content validity and the internal consistency of the Safety Attitudes Questionnaire in a large Belgian academic medical center.MethodThe translation into Dutch was done by three researchers. A panel of fifteen Dutch speaking experts evaluated the translation and its content validity. Content validity was quantified by the content validity index (CVI) and a modified kappa index. Face validity was evaluated by two nurses and two physicians who assessed the Dutch version of the SAQ. A cross-sectional design was used to test internal consistency of the SAQ items by calculating Cronbach's alpha and corrected item-total correlations.ResultsTwenty-three of the 33 SAQ items showed excellent and seven items showed good content validity. One item had a fair kappa value (item 20) and two items had a low content validity index (items 15 and 16). The average CVI of the total scale was 0.83 and ranged from 0.55 to 0.97 for the six subscales. The face-validity was good with no fundamental remarks given. The SAQ's overall Cronbach's alpha was 0.9 and changed minimally when removing items. The item-total correlations ranged from 0.10 to 0.63, no single items were strongly correlated with the sum of the other items.ConclusionWe conclude that in this study the Dutch version of the Safety Attitudes Questionnaire showed acceptable to good psychometric properties. In line with previous evidence, this instrument seems to be an acceptable to adequate tool to evaluate the safety climate.Copyright © 2011 Elsevier Ltd. All rights reserved.

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