title: Validation of the VERITAS-Pro treatment adherence scale in a Spanish sample population with hemophilia.
abstract: OBJECTIVE
  We aimed to conduct a validation in Spanish of the Validated Hemophilia Regimen Treatment Adherence Scale - Prophylaxis (VERITAS-Pro) questionnaire for use in patients with hemophilia under prophylactic treatment.
  
  
  METHODS
  The VERITAS-Pro scale was adapted through a process of back translation from English to Spanish. A bilingual native Spanish translator translated the scale from English to Spanish. Subsequently, a bilingual native English translator translated the scale from Spanish to English. The disagreements were resolved by agreement between the research team and translators. Seventy-three patients with hemophilia, aged 13-62 years, were enrolled in the study. The scale was applied twice (2 months apart) to evaluate the test-retest reliability.
  
  
  RESULTS
  Internal consistency reliability was lower on the Spanish VERITAS-Pro than on the English version. Test-retest reliability was high, ranging from 0.83 to 0.92. No significant differences (P>0.05) were found between test and retest scores in subscales of VERITAS-Pro. In general, Spanish patients showed higher rates of nonadherence than American patients in all subscales.
  
  
  CONCLUSIONS
  The Spanish version of the VERITAS-Pro has high levels of consistency and empirical validity. This scale can be administered to assess the degree of adherence of prophylactic treatment in patients with hemophilia.
authors.affiliation: Department of Physiotherapy, School of Biomedical and Health Sciences, European University of Madrid; Fishemo, Centro Especial de Empleo, Spanish Federation of Hemophilia; Royal Foundation Victoria Eugenia, Madrid.
authors.forename: Rubén
authors.initials: R
authors.lastname: Cuesta-Barriuso
authors.affiliation: Department of Psychiatry and Social Psychology, Faculty of Medicine, University of Murcia, Murcia, Spain.
authors.forename: Ana
authors.initials: A
authors.lastname: Torres-Ortuño
authors.affiliation: Department of Psychiatry and Social Psychology, Faculty of Medicine, University of Murcia, Murcia, Spain.
authors.forename: Pilar
authors.initials: P
authors.lastname: Galindo-Piñana
authors.affiliation: Department of Psychiatry and Social Psychology, Faculty of Medicine, University of Murcia, Murcia, Spain.
authors.forename: Joaquín
authors.initials: J
authors.lastname: Nieto-Munuera
authors.affiliation: Indiana Hemophilia & Thrombosis Center, Indianapolis, IN, USA.
authors.forename: Natalie
authors.initials: N
authors.lastname: Duncan
authors.affiliation: Department of Basic Psychology and Methodology, Faculty of Psychology, University of Murcia, Murcia, Spain.
authors.forename: José Antonio
authors.initials: JA
authors.lastname: López-Pina
keywords: adherence treatment; hemophilia; reliability; validity