Validity Evidence of the Brazilian Version of the Florida Shock Anxiety Scale for Patients with Implantable Cardioverter Defibrillators

Author(s)

Katia Regina Silva ^[1] ; Roberto Costa ^[2] ; Giovanna Regina Garcia de Oliveira Melo ^[3] ; Flávio Rebustini ^[4] ; Marcos Sidney Benedetto ^[5] ; Marcia Mitie Nagumo ^[6] ; Samuel F. Sears ^[7]

Affiliation

^[1] Universidade de São Paulo. Faculdade de Medicina. Instituto do Coração - Brasil

^[2] Universidade de São Paulo. Faculdade de Medicina. Instituto do Coração - Brasil

^[3] Universidade de São Paulo. Faculdade de Medicina. Instituto do Coração - Brasil

^[4] Universidade de São Paulo. Escola de Artes, Ciências e Humanidades - Brasil

^[5] Universidade de São Paulo. Faculdade de Medicina. Instituto do Coração - Brasil

^[6] Universidade de São Paulo. Faculdade de Medicina. Instituto do Coração - Brasil

^[7] East Carolina University. Department of Psychology and Cardiovascular Sciences Greenville - Estados Unidos

• Document type: Journal article
• Source: Arquivos Brasileiros de Cardiologia; v. 114, n. 5, p. 764-772, 2020-06-01.

Abstract

Abstract Background In spite of proven effectiveness of implantable cardioverter defibrillators (ICDs), shock therapy delivered by the device may result in increased levels of anxiety and depression, leading to deleterious effects on quality of life. Objective To carry out the translation, cross-cultural adaptation and validation of the Florida Shock Anxiety Scale (FSAS) scale into Brazilian Portuguese. Methods In this psychometric study, construct validity was performed by exploratory (EFA) and confirmatory (CFA) factor analyses, and by item response theory (IRT). The adjustment indexes of the CFA were: Robust Mean-Scaled Chi Square/df NNFI, CFI (Comparative Fit Index), GFI (Goodness Fit Index), AGFI (Adjusted Goodness Fit Index), RMSEA (Root Mean Square Error of Approximation) and RMSR (Root Mean Square of Residuals). Reliability was evaluated through Cronbach’s Alpha, McDonald’s Omega and Greatest Lower Bound (GLB). The analyses were carried out with the programs SPSS 23 and Factor 10.8.01. A 5 percent significance level was used. Results The final Portuguese version of the FSAS was administered to 151 ICD patients, with a mean age of 55.7 ± 14.1 years, and predominantly male. The parallel analysis indicated that the FSAS is unidimensional, with an explained variance of 64.4%. The correlations ranged from 0.31 to 0.77, factor loadings from 0.67 to 0.86, and communalities from 0.46 to 0.74. The adjustment indexes of the CFA were above the quality threshold. Satisfactory reliability evidence was provided by the FSAS. Conclusions The FSAS-Br showed consistent validity and reliability evidence. Therefore, it can be used in ICD patients in Brazil. (Arq Bras Cardiol. 2020; 114(5):764-772) (AU)

• FAPESP's process: 16/02104-6 - Translation, validation and cross-cultural adaptation of two specific questionnaires for the assessment of outcomes reported by implantable cardioverter-defibrillator recipients
• Grantee: Katia Regina da Silva
• Support Opportunities: Regular Research Grants