• Pernille Skovby, Charlotte Ulrikka Rask, Rolf Dall, Hanne Aagaard, and Hanne Kronborg.
• Anæstesiologisk-Intensiv Afdeling, Aarhus Universitshospital, Brendstrupgårdsvej 100, 8200 Aarhus N, Denmark. pernisko@rm.dk.
• Dan Med J. 2014 Jun 1;61(6):A4853.

IntroductionPreoperative anxiety is common in children and it is associated with an adverse post-operative outcome. The modified Yale Preoperative Anxiety Scale (m-YPAS) was developed to assess preoperative anxiety in children. The purpose of this study was to translate and adapt the m-YPAS to Danish cultural and linguistic conditions and to test its face validity and inter-rater reliability in a clinical setting.Material And MethodsTranslation was done in accordance with the WHO guidelines. Face validity and linguistic challenges were resolved in a focus group with five nurse anaesthetists. Inter-rater reliability for the subscales in the m-YPAS was determined at two different time points by using weighted kappa (κw) statistics, whereas agreement on the overall weighted scores was calculated using the intraclass correlation coefficient (ICC). The inter-rater reliability test was done by a paediatric anaesthesiologist consultant, a psychiatrist and the first author.ResultsThe Danish version of the m-YPAS was considered suitable and its face validity was satisfactory. Inter-rater reliability analysis revealed that inter-observer agreement among three independent raters was good (induction 1: κw: 0.63-0.98, ICC = 0.92; induction 2: κw: 0.72-0.96, ICC = 0.92).ConclusionStandardised and validated assessment tools are needed to evaluate interventions to reduce preoperative anxiety in children. A Danish version of the m-YPAS now exists, and preliminary testing has demonstrated a satisfactory face validity and inter-rater reliability.FundingThe study was supported by grants from TrygFonden (Grant number: j.no.7-11-1292).Trial RegistrationThe Danish Data Protection Agency, the Central Denmark Region, has approved the study (j.no.: 2007-58-0010).

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