title: Development and validation of a new questionnaire measuring treatment satisfaction in patients with non-valvular atrial fibrillation: SAFUCA®.
abstract: To develop a new questionnaire with good psychometric properties to measure satisfaction with medical care in patients with non-valvular atrial fibrillation.
  
  
  
  The initial instrument was composed of 37 items, arranged in 6 dimensions: efficacy, ease and convenience, impact on daily activities, satisfaction with medical care, undesired effects of medication, and overall satisfaction. Items and dimensions were extracted from reviewing existing instruments, 3 focus groups with chronic patients, and a panel of 8 experts. Additionally, 3 visual analog scales measuring quality of life, effectiveness, and overall satisfaction were administered. A convenience sample of 119 patients was used for item reduction. Classic psychometric theory and item analysis techniques were used (exploratory factor and confirmatory factor analysis, test-retest, and correlation with visual scales). A validation sample of 230 patients was used to assess convergent validity, and an additional 220 patients sample was used to discriminate between treatment and compliance groups.
  
  
  
  The questionnaire was reduced in length to 25 items, but the impact dimension had split in treatment inconvenience and treatment control. Overall reliability was high (α = 0.861) with acceptable dimensional reliabilities (α = 0.764-0.908). Individual dimensions correlated to varying degrees. Test-retest correlations were high (r = 0.784-0.965), and correlations with visual and already validated scales were substantial. Differences were detected between antivitamin K and new-oral-anticoagulant treatments in several dimensions (p < 0.05). Treatment satisfaction was related with compliance.
  
  
  
  This new 25-item questionnaire has good psychometric properties for measuring satisfaction with medical care in patients with this condition. It is capable of detecting differences between different treatments.
authors.affiliation: Departamento de Metodología, Facultad de Psicología, Universidad Autónoma de Madrid, C/Iván Pavlov 6, 28049, Madrid, Spain. miguel.ruiz@uam.es.
authors.forename: Miguel A
authors.identifier: 0000-0002-2734-2196
authors.initials: MA
authors.lastname: Ruiz
authors.affiliation: Unidad de Hematología, Hospital Universitario de Salamanca-ISBAL, Salamanca, Spain.
authors.forename: José Ramón
authors.initials: JR
authors.lastname: González-Porras
authors.affiliation: Clínica Madrid, Fuenlabrada, Spain.
authors.forename: José Luis
authors.initials: JL
authors.lastname: Aranguren
authors.affiliation: Departmento de Cardiología, Hospital Clínico San Carlos, Madrid, Spain.
authors.forename: Eduardo
authors.initials: E
authors.lastname: Franco
authors.affiliation: Centro de salud José Marvá, Madrid, Spain.
authors.forename: Fernando
authors.initials: F
authors.lastname: Villasante
authors.affiliation: Departmento de Cardiología, Fundación Jiménez Díaz, Madrid, Spain.
authors.forename: José
authors.initials: J
authors.lastname: Tuñón
authors.affiliation: Servicio de hematología, Complejo Asistencial Universitario de Burgos, Burgos, Spain.
authors.forename: Tomás José
authors.initials: TJ
authors.lastname: González-López
authors.affiliation: Departamento de Investigación de Resultados en Salud y Farmacoeconomía, Pfizer, S.L.U., Alcobendas, Spain.
authors.forename: Marina
authors.initials: M
authors.lastname: de Salas-Cansado
authors.affiliation: Departamento de Investigación de Resultados en Salud y Farmacoeconomía, Pfizer, S.L.U., Alcobendas, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Soto
mesh_terms: D000368:Aged; D000925:Anticoagulants / Q000008:administration & dosage / Q000627:therapeutic use; D001281:Atrial Fibrillation / Q000188:drug therapy / Q000523:psychology*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D010349:Patient Compliance; D010549:Personal Satisfaction; D011788:Quality of Life; D015203:Reproducibility of Results; D013030:Spain; D011795:Surveys and Questionnaires
chemical_list: D000925:Anticoagulants
keywords: Anticoagulants; Non-valvular atrial fibrillation; Questionnaire; Treatment satisfaction