Please use this identifier to cite or link to this item: https://doi.org/10.1186/1477-7525-11-177
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dc.titleValidation of an instrument to evaluate quality of life in the aging population: WHOQOL-AGE
dc.contributor.authorCaballero, F.F
dc.contributor.authorMiret, M
dc.contributor.authorPower, M
dc.contributor.authorChatterji, S
dc.contributor.authorTobiasz-Adamczyk, B
dc.contributor.authorKoskinen, S
dc.contributor.authorLeonardi, M
dc.contributor.authorOlaya, B
dc.contributor.authorHaro, J.M
dc.contributor.authorAyuso-Mateos, J.L
dc.date.accessioned2020-10-27T11:15:27Z
dc.date.available2020-10-27T11:15:27Z
dc.date.issued2013
dc.identifier.citationCaballero, F.F, Miret, M, Power, M, Chatterji, S, Tobiasz-Adamczyk, B, Koskinen, S, Leonardi, M, Olaya, B, Haro, J.M, Ayuso-Mateos, J.L (2013). Validation of an instrument to evaluate quality of life in the aging population: WHOQOL-AGE. Health and Quality of Life Outcomes 11 (1) : 177. ScholarBank@NUS Repository. https://doi.org/10.1186/1477-7525-11-177
dc.identifier.issn14777525
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/181544
dc.description.abstractBackground: There is a need for short, specific instruments that assess quality of life (QOL) adequately in the older adult population. The aims of the present study were to obtain evidence on the validity of the inferences that could be drawn from an instrument to measure QOL in the aging population (people 50+ years old), and to test its psychometric properties.Methods: The instrument, WHOQOL-AGE, comprised 13 positive items, assessed on a five-point rating scale, and was administered to nationally representative samples (n = 9987) from Finland, Poland, and Spain. Cronbach's alpha was employed to assess internal consistency reliability, whereas the validity of the questionnaire was assessed by means of factor analysis, graded response model, Pearson's correlation coefficient and unpaired t-test. Normative values were calculated across countries and for different age groups.Results: The satisfactory goodness-of-fit indices confirmed that the factorial structure of WHOQOL-AGE comprises two first-order factors. Cronbach's alpha was 0.88 for factor 1, and 0.84 for factor 2. Evidence supporting a global score was found with a second-order factor model, according to the goodness-of-fit indices: CFI = 0.93, TLI = 0.91, RMSEA = 0.073. Convergent validity was estimated at r = 0.75 and adequate discriminant validity was also found. Significant differences were found between healthy individuals (74.19 ± 13.21) and individuals with at least one chronic condition (64.29 ± 16.29), supporting adequate known-groups validity.Conclusions: WHOQOL-AGE has shown good psychometric properties in Finland, Poland, and Spain. Therefore, considerable support is provided to using the WHOQOL-AGE to measure QOL in older adults in these countries, and to compare the QOL of older and younger adults. © 2013 Caballero et al.; licensee BioMed Central Ltd.
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceUnpaywall 20201031
dc.subjectadult
dc.subjectaged
dc.subjectaging
dc.subjectarticle
dc.subjectconvergent validity
dc.subjectCronbach alpha coefficient
dc.subjectdiscriminant validity
dc.subjectfactorial analysis
dc.subjectfemale
dc.subjectFinland
dc.subjecthuman
dc.subjectinternal consistency
dc.subjectmale
dc.subjectPoland
dc.subjectquality of life
dc.subjectquestionnaire
dc.subjectrating scale
dc.subjectreliability
dc.subjectSpain
dc.subjectAdolescent
dc.subjectAdult
dc.subjectAge Factors
dc.subjectAged
dc.subjectAged, 80 and over
dc.subjectAging
dc.subjectEurope
dc.subjectFactor Analysis, Statistical
dc.subjectFemale
dc.subjectHumans
dc.subjectMale
dc.subjectMiddle Aged
dc.subjectQuality of Life
dc.subjectQuestionnaires
dc.subjectYoung Adult
dc.typeArticle
dc.contributor.departmentPSYCHOLOGY
dc.description.doi10.1186/1477-7525-11-177
dc.description.sourcetitleHealth and Quality of Life Outcomes
dc.description.volume11
dc.description.issue1
dc.description.page177
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