title: Psychometric properties of the Brazilian version of the Pain Catastrophizing Scale for acute low back pain.
abstract: Measurement instruments of pain catastrophizing for middle-aged and elderly individuals are needed to understand its impact on low back pain. The goals were to cross-culturally adapt the Pain Catastrophizing Scale, assess the construct validity through Rasch analysis, and verify reliability and convergent validity of pain catastrophizing with psychosocial factors. 131 individuals aged 55 years and older with acute low back pain were interviewed . The intra-rater reliability was Kp = 0.80 and interrater Kp = 0.75. The Rasch analysis found adequate reliability coefficients (0.95 for items and 0.90 for individuals ). The separation index for the elderly was 2.95 and 4.59 items. Of the 13 items, one did not fit the model, which was justified in the sample evaluated. The pain catastrophizing correlated with most psychosocial factors. The instrument proved to be clinically useful. Subsequent studies should carry out the same analysis in different populations.
authors.affiliation: Departamento de Ciências da Rehabilitação, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
authors.forename: Renata Antunes
authors.initials: RA
authors.lastname: Lopes
authors.affiliation: Departamento de Reabilitação, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
authors.forename: Rosângela Corrêa
authors.initials: RC
authors.lastname: Dias
authors.affiliation: Departamento de Ciências da Rehabilitação, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
authors.forename: Bárbara Zille de
authors.initials: BZ
authors.lastname: Queiroz
authors.affiliation: Departamento de Ciências da Rehabilitação, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
authors.forename: Nayza Maciel de Britto
authors.initials: NM
authors.lastname: Rosa
authors.affiliation: Departamento de Fioterapia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
authors.forename: Leani de Souza Máximo
authors.initials: Lde S
authors.lastname: Pereira
authors.affiliation: Departamento de Reabilitação, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
authors.forename: João Marcos Domingues
authors.initials: JM
authors.lastname: Dias
authors.affiliation: Occupational Therapist, University of Illinois, Champaign Illinois, USA.
authors.forename: Lívia de Castro
authors.initials: Lde C
authors.lastname: Magalhães
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001938:Brazil; D058443:Catastrophization / Q000523:psychology*; D003431:Cross-Cultural Comparison; D005260:Female; D006801:Humans; D007802:Language; D017116:Low Back Pain / Q000523:psychology*; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D010147:Pain Measurement / Q000379:methods / Q000523:psychology* / Q000592:standards; D011594:Psychometrics; D015203:Reproducibility of Results; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires / Q000592:standards; D014177:Translations