title: Validity and reliability of the Persian version of the Brief Aging Perceptions Questionnaire in Iranian older adults.
abstract: BACKGROUND
  Perceptions of aging refer to individuals' understanding of aging within their sociocultural context. Proper measurement of this concept in various societies requires accurate tools.
  
  
  OBJECTIVE
  The present study was conducted with the aim to translate and validate the Brief Aging Perceptions Questionnaire (B-APQ) and assess its psychometric features in Iranian older adults.
  
  
  METHODS
  In this study, the Persian version of B-APQ was validated for 400 older adults. This questionnaire was translated into Persian according to the Wild et al's model. The Persian version was validated using content, face, and construct (using confirmatory factor analysis) validities, and then its internal consistency and test-retest reliability were measured. Data were analyzed using the statistical software programs SPSS 18 and EQS-6.1.
  
  
  RESULTS
  The confirmatory factor analysis confirmed construct validity and five subscales of B-APQ. Test-retest reliability with 3-week interval produced r=0.94. Cronbach's alpha was found to be 0.75 for the whole questionnaire, and from 0.53 to 0.77 for the five factors.
  
  
  CONCLUSIONS
  The Persian version of B-APQ showed favorable validity and reliability, and thus it can be used for measuring different dimensions of perceptions of aging in Iranian older adults.
authors.affiliation: Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran; Nursing Department, Gonabad University of Medical Sciences, Gonabad, Iran.
authors.forename: Leila
authors.initials: L
authors.lastname: Sadegh Moghadam
authors.affiliation: Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran; Department of Ageing, University of Social Welfare and Rehabilitation, Tehran, Iran.
authors.forename: Mahshid
authors.initials: M
authors.lastname: Foroughan
authors.affiliation: Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran; Nursing Department, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
authors.forename: Farahnaz
authors.initials: F
authors.lastname: Mohammadi Shahboulaghi
authors.affiliation: Nursing Department, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
authors.forename: Fazlollah
authors.initials: F
authors.lastname: Ahmadi
authors.affiliation: Department of Medical-Surgical Nursing, Faculty of Nursing and Midwifery, Gonabad University of Medical Sciences, Gonabad, Iran.
authors.forename: Moosa
authors.initials: M
authors.lastname: Sajjadi
authors.affiliation: Department of Ageing, University of Social Welfare and Rehabilitation, Tehran, Iran.
authors.forename: Akram
authors.initials: A
authors.lastname: Farhadi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D007492:Iran; D007802:Language; D008297:Male; D008875:Middle Aged; D010465:Perception; D011594:Psychometrics / Q000379:methods*; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires / Q000592:standards*; D014175:Translating
keywords: Brief Aging Perception Questionnaire; older adults; psychometric study; validity