title: Brazilian validation of the Quality of Life Instrument/spirituality, religion and personal beliefs.
abstract: OBJECTIVE
  To analyze the psychometric properties of the World Health Organization's Quality of Life Instrument--Spirituality, Religion and Personal Beliefs module (WHOQOL-SRPB).
  
  
  METHODS
  The WHOQOL-SRPB, the Brief Spiritual/Religious Coping Scale (Brief-SRCOPE Scale), the WHOQOL-BREF and the Beck Depression Inventory (BDI) were consecutively applied in a convenience sample of 404 patients and workers of a university hospital and workers of a university, in the city of Porto Alegre, Southern Brazil, between 2006 and 2009. The sample was stratified by sex, age, health status and religion/belief. The retest of the two first instruments was conducted with 54 participants. Exploratory factorial analyses of the WHOQOL-SRPB with the method of main components were performed, without limiting the number of factors, and requiring eight factors concomitantly with the WHOQOL-BREF items.
  
  
  RESULTS
  The Brazilian Portuguese version of the WHOQOL-SRPB (General SRPB-Domain) showed construct validity, with a discriminatory validity between believers and non-believers (t = 7.40; p = 0.0001); concurrent criterion-related validity, distinguishing depressed individuals from non-depressed ones (t = 5.03; p = 0.0001); convergent validity with the WHOQOL-BREF (physical r = 0.18; psychological r = 0.46; social r = 0.35; environmental r = 0.29; global r = 0.23; p = 0.0001) and with the SRPB-Domain of the WHOQOL-100 (r = 0.78; p = 0.0001); and convergent/discriminatory validity with the brief SRCOPE Scale (with positive SRCOPE r = 0.64; p = 0.0001/negative SRCOPE r = -0.03; p = 0.554). Excellent test-retest reliability (t = 0.74; p = 0.463) and internal consistency (α = 0.96; intrafactorial correlation 0.87 > r > 0.60; p = 0.0001) were observed. The exploratory factorial analyses performed corroborated the eight-factor structure of the WHOQOL-SRPB multicenter study.
  
  
  CONCLUSIONS
  The Brazilian Portuguese version of the WHOQOL-SRPB showed good psychometric qualities and use valid and reliable in Brazil. It is suggested that new studies be conducted with specific populations, such as different religions, cultural groups and/or diseases.
authors.affiliation: Programa de Pós-Graduação em Ciências Médicas, Psiquiatria, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil. raquel-panzini@saude.rs.gov.br
authors.forename: Raquel Gehrke
authors.initials: RG
authors.lastname: Panzini
authors.forename: Camila
authors.initials: C
authors.lastname: Maganha
authors.forename: Neusa Sica da
authors.initials: NS
authors.lastname: Rocha
authors.forename: Denise Ruschel
authors.initials: DR
authors.lastname: Bandeira
authors.forename: Marcelo P
authors.initials: MP
authors.lastname: Fleck
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001938:Brazil; D003863:Depression / Q000523:psychology; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D011788:Quality of Life / Q000523:psychology*; D012069:Religion and Psychology; D015203:Reproducibility of Results; D029181:Spirituality; D011795:Surveys and Questionnaires / Q000592:standards*; D014944:World Health Organization; D055815:Young Adult