title: Reliability and validity of the Spanish version of the modified Yale Preoperative Anxiety Scale.
abstract: To minimise preoperative stress and increase child cooperation during induction of anaesthesia is one of the most important perioperative objectives. The modified Yale Preoperative Anxiety Scale was developed to evaluate anxiety. The aim of this study was to translate into Spanish, and validate the psychometric properties of the Spanish version of this scale.
  
  
  
  The Spanish translation of the scale was performed following the World Health Organisation guidelines. During induction of anaesthesia, 81 children aged 2 to 12 years were recorded. Two observers evaluated the recordings independently. Content validity index of modified Yale Preoperative Anxiety Scale Spanish version was assessed. Weighted Kappa was calculated to measure interobserver agreement, and the Pearson correlation between the Induction Compliance Checklist and the modified Yale Preoperative Anxiety Scale was determined.
  
  
  
  The Spanish version obtained high content validity (0.91 to 0.98). Reliability analysis using weighted Kappa statistics revealed that interobserver agreement ranged from 0.54 to 0.75. Concurrent validity was high (r=0.94; P<.001).
  
  
  
  Validated assessment tools are needed to evaluate interventions to reduce child preoperative anxiety. The Spanish version of the modified Yale Preoperative Anxiety Scale evaluated in this study has shown good psychometric properties of reliability and validity.
authors.affiliation: Unidad de Cirugía Ambulatoria, Hospital Materno-Infantil Sant Joan de Déu, Esplugues de Llobregat, Barcelona, España. Electronic address: cjerez@hsjdbcn.org.
authors.forename: C
authors.initials: C
authors.lastname: Jerez
authors.affiliation: Facultad de Ciencias Sociales, Universidad de Salamanca, Campus Miguel de Unamuno, Salamanca, España.
authors.forename: A M
authors.initials: AM
authors.lastname: Ullán
authors.affiliation: Departamento de Anestesiología y Reanimación, Hospital Materno-Infantil Sant Joan de Déu, Esplugues de Llobregat, Barcelona, España.
authors.forename: J J
authors.initials: JJ
authors.lastname: Lázaro
mesh_terms: D000758:Anesthesia; D001007:Anxiety; D001008:Anxiety Disorders; D002648:Child; D002675:Child, Preschool; D006801:Humans; D011594:Psychometrics; D015203:Reproducibility of Results
keywords: Adaptación psicológica; Ambulatory care; Ansiedad; Anxiety; Atención ambulatoria; Child behaviour; Comportamiento infantil; Coping behaviour; Estudios de validación; Periodo preoperatorio; Preoperative period; Validation studies