{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T13:57:59Z","timestamp":1772891879871,"version":"3.50.1"},"reference-count":44,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2020,9,11]],"date-time":"2020-09-11T00:00:00Z","timestamp":1599782400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"AESI 2018","award":["PI18CIII\/00046"],"award-info":[{"award-number":["PI18CIII\/00046"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>The purpose of this study is to assess the psychometric properties of the Portuguese version of the Control, Autonomy, Self-realization, and Pleasure (CASP)-12 scale used in the Survey of Health, Aging and Retirement in Europe (SHARE) project. Data were obtained from a representative sample of 1666 people aged \u226550 years living in Portugal and participating in the SHARE wave 6. In addition to the CASP-12 scale, sociodemographic data and health status, activity limitation (GALI), depression (Euro-D) and satisfaction with life scores were collected. Data quality and acceptability, construct and structural validity and internal consistency of the CASP-12 scale were analyzed. A Rasch analysis was also performed. CASP-12 total score (mean: 33.3; standard deviation: 5.8, range: 12\u201348) correlated with Euro-D (\u22120.57) and with life satisfaction (0.52). Mean scores were significantly lower for women, people aged \u226575 years and those with activity limitations and worse health status (p &lt; 0.001). The confirmatory factor analysis showed good fit to the 4-factor model (root mean squared error of approximation (RMSEA): 0.07; comparative fit index (CFI): 0.90, \u03c72 (48) = 444.59, p &lt; 0.001), which was confirmed by Rasch analysis (\u03c72 (36) = 10.089, p = 0.745, person separation index (PSI) = 0.722 for the 4-factor model). For domains, person separation index ranged 0.31\u20130.79 and Cronbach\u2019s alpha, 0.37\u20130.73. In conclusion, the Portuguese version of the CASP-12 scale presents some inadequacies in acceptability, internal consistency and structural validity.<\/jats:p>","DOI":"10.3390\/ijerph17186610","type":"journal-article","created":{"date-parts":[[2020,9,11]],"date-time":"2020-09-11T09:05:16Z","timestamp":1599815116000},"page":"6610","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Psychometric Properties of the CASP-12 Scale in Portugal: An Analysis Using SHARE Data"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3829-0675","authenticated-orcid":false,"given":"Carmen","family":"Rodr\u00edguez-Bl\u00e1zquez","sequence":"first","affiliation":[{"name":"National Centre of Epidemiology, Carlos III Health Institute, 28029 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4740-7951","authenticated-orcid":false,"given":"Oscar","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Center for Health Technology and Services Research (CINTESIS), Department of Education and Psychology of the University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"given":"Alba","family":"Ayala","sequence":"additional","affiliation":[{"name":"National School of Public Health, Carlos III Health Institute, 28029 Madrid, Spain"}]},{"given":"Laetitia","family":"Teixeira","sequence":"additional","affiliation":[{"name":"Center for Health Technology and Services Research (CINTESIS), Institute of Biomedical Sciences Abel Salazar, University of Porto (ICBAS.UP), 4050-313 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8212-9235","authenticated-orcid":false,"given":"Lia","family":"Ara\u00fajo","sequence":"additional","affiliation":[{"name":"Center for Health Technology and Services Research (CINTESIS), School of Education, Polytechnic Institute of Viseu (ESEV.IPV), 3504-510 Viseu, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3935-962X","authenticated-orcid":false,"given":"Maria Jo\u00e3o","family":"Forjaz","sequence":"additional","affiliation":[{"name":"National Centre of Epidemiology, Carlos III Health Institute, 28029 Madrid, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2020,9,11]]},"reference":[{"key":"ref_1","unstructured":"Eurostat, European Union (2019). Ageing Europe\u2014Looking at the Lives of Older People in the EU\u2014Statistics Explained, Publications Office of the European Union."},{"key":"ref_2","unstructured":"Brown, J., Bowling, A., and Flynn, T. (2004). Models of Quality of Life: A Taxonomy, Overview and Systematic Review of the Literature, European Forum on Population Ageing Research."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"WHOQOL Group (1995). The World Health Organization Quality of Life assessment (WHOQOL): Position paper from the World Health Organization. Soc. Sci. Med., 41, 1403\u20131409.","DOI":"10.1016\/0277-9536(95)00112-K"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2197","DOI":"10.1007\/s11136-005-7380-9","article-title":"Development of the WHOQOL-old module","volume":"14","author":"Power","year":"2005","journal-title":"Qual. Life Res."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"2367","DOI":"10.1007\/s11136-016-1275-9","article-title":"The European Portuguese WHOQOL-OLD module and the new facet Family\/Family life: Reliability and validity studies","volume":"25","author":"Vilar","year":"2016","journal-title":"Qual. Life Res."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"186","DOI":"10.1080\/1360786031000101157","article-title":"A measure of quality of life in early old age: The theory, development and properties of a needs satisfaction model (CASP-19)","volume":"7","author":"Hyde","year":"2003","journal-title":"Aging Ment. Health"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"370","DOI":"10.1037\/h0054346","article-title":"A theory of human motivation","volume":"50","author":"Maslow","year":"1943","journal-title":"Psychol. Rev."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Doyal, L., and Gough, I. (1991). A Theory of Human Need, Macmillan.","DOI":"10.1007\/978-1-349-21500-3"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1007\/s11205-007-9220-5","article-title":"The Evaluation of a Self-enumerated Scale of Quality of Life (CASP-19) in the Context of Research on Ageing: A Combination of Exploratory and Confirmatory Approaches","volume":"89","author":"Wiggins","year":"2008","journal-title":"Soc. Indic. Res."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"997","DOI":"10.1007\/s11136-010-9835-x","article-title":"The CASP-19 as a measure of quality of life in old age: Evaluation of its use in a retirement community","volume":"20","author":"Sim","year":"2011","journal-title":"Qual. Life Res."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"571","DOI":"10.1080\/13607863.2015.1018868","article-title":"A decade of research using the CASP scale: Key findings and future directions","volume":"19","author":"Hyde","year":"2015","journal-title":"Aging Ment. Health"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"992","DOI":"10.1093\/ije\/dyt088","article-title":"Data Resource Profile: The Survey of Health, Ageing and Retirement in Europe (SHARE)","volume":"42","author":"Brandt","year":"2013","journal-title":"Int. J. Epidemiol."},{"key":"ref_13","unstructured":"Borsch-Supan, A., Nrugiavini, A., Jurges, H., Mackenbach, J., Siegriest, J., and Weber, G. (2005). Quality of life and wellbeing. Health, Ageing and Retirement in Europe: First Results from the Survey of Health, Ageing and Retirement in Europe, MEA."},{"key":"ref_14","unstructured":"Borrat-Besson, C., Ryser, V., and Gon\u00e7alves, J. (2015). An Evaluation of the CASP-12 Scale Used in the Survey of Ageing and Retirement in Europe (SHARE) to Measure Quality of Life among People Aged 50+, FORS."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"700","DOI":"10.1080\/13607863.2017.1292208","article-title":"Psychometric properties of the CASP-12 in a Spanish older community dwelling sample","volume":"22","author":"Martin","year":"2018","journal-title":"Aging Ment. Health"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1186\/s41687-018-0078-x","article-title":"Bifactor model of the CASP-12\u2019s general factor for measuring quality of life in older patients","volume":"2","author":"Kerry","year":"2018","journal-title":"J. Patient Rep. Outcomes"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"2429","DOI":"10.1007\/s11136-013-0367-z","article-title":"Evidence for a unidimensional 15-item version of the CASP-19 using a Rasch model approach","volume":"22","author":"Oluboyede","year":"2013","journal-title":"Qual. Life Res."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"B\u00f6rsch-Supan, A. (2019). Survey of Health, Ageing and Retirement in Europe (SHARE) Wave 6, SHARE-ERIC, Munich Center for the Economics of Aging (MEA). Release Version: 7.0.0.","DOI":"10.1007\/978-3-319-69892-2_348-1"},{"key":"ref_19","unstructured":"Malter, F., and B\u00f6rsch-Supan, A. (2017). SHARE Wave 6: Panel Innovations and Collecting Dried Blood Spots, MEA, Max Planck Institute for Social Law and Social Policy."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"330","DOI":"10.1192\/bjp.174.4.330","article-title":"Development of the EURO-D scale\u2014A European, Union initiative to compare symptoms of depression in 14 European centres","volume":"174","author":"Prince","year":"1999","journal-title":"Br. J. Psychiatry"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"903","DOI":"10.1016\/S0895-4356(98)00081-X","article-title":"Overview of the SF-36 Health Survey and the International Quality of Life Assessment (IQOLA) Project","volume":"51","author":"Ware","year":"1998","journal-title":"J. Clin. Epidemiol."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1093\/eurpub\/13.suppl_1.6","article-title":"Creating a coherent set of indicators to monitor health across Europe\u2014The Euro-REVES 2 project","volume":"13","author":"Robine","year":"2003","journal-title":"Eur. J. Public Health"},{"key":"ref_23","unstructured":"UNESCO (2012). International Standard Classification of Education ISCED 2011, UNESCO Institute for Statistics."},{"key":"ref_24","unstructured":"B\u00f6rsch-Supan, A. (2005). SHARE translation procedures and translation assessment. The Survey of Health, Aging, and Retirement in Europe Methodology, MEA."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1016\/j.jclinepi.2006.03.012","article-title":"Quality criteria were proposed for measurement properties of health status questionnaires","volume":"60","author":"Terwee","year":"2007","journal-title":"J. Clin. Epidemiol."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"539","DOI":"10.1007\/s11136-010-9606-8","article-title":"The COSMIN checklist for assessing the methodological quality of studies on measurement properties of health status measurement instruments: An international Delphi study","volume":"19","author":"Mokkink","year":"2010","journal-title":"Qual. Life Res."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"293","DOI":"10.1007\/BF01593882","article-title":"Individual-patient monitoring in clinical practice: Are available health status surveys adequate?","volume":"4","author":"McHorney","year":"1995","journal-title":"Qual. Life Res."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1080\/10705519909540118","article-title":"Cutoff Criteria for Fit Indexes in Covariance Structure Analysis: Conventional Criteria versus New Alternatives","volume":"6","author":"Hu","year":"1999","journal-title":"Struct. Equ. Model."},{"key":"ref_29","unstructured":"Spilker, B. (1996). How to develop and validate a new health-related quality of life instrument. Quality of Life and Pharmacoeconomics in Clinical Trials, Lippincott-Raven Publishers."},{"key":"ref_30","unstructured":"Scientific Advisory Committee of the Medical Outcomes Trust (2002). Assessing health status and quality-of-life instruments: Attributes and review criteria. Qual. Life Res., 11, 193\u2013205."},{"key":"ref_31","unstructured":"Rasch, G. (1993). Probabilistic Models for Some Intelligence and Attainment Tests, MESA Press."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1348\/014466506X96931","article-title":"An introduction to the Rasch measurement model: An example using the Hospital Anxiety and Depression Scale (HADS)","volume":"46","author":"Pallant","year":"2007","journal-title":"Br. J. Clin. Psychol."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1358","DOI":"10.1002\/art.23108","article-title":"The Rasch measurement model in rheumatology: What is it and why use it? When should it be applied, and what should one look for in a Rasch paper?","volume":"57","author":"Tennant","year":"2007","journal-title":"Arthritis Rheum."},{"key":"ref_34","doi-asserted-by":"crossref","unstructured":"Sampaio, C., Goetz, C.G., and Schrag, A. (2012). How to evaluate validation data. Rating Scales in Parkinson\u2019s Disease, Oxford University Press.","DOI":"10.1093\/med\/9780199783106.001.0001"},{"key":"ref_35","first-page":"205","article-title":"Detecting and evaluating the impact of multidimensionality using item fit statistics and principal component analysis of residuals","volume":"3","author":"Smith","year":"2002","journal-title":"J. Appl. Meas."},{"key":"ref_36","first-page":"1048","article-title":"Unidimensionality Matters! (A Tale of Two Smiths?)","volume":"20","author":"Tennant","year":"2006","journal-title":"Rasch Meas. Trans."},{"key":"ref_37","first-page":"1105","article-title":"Local Dependency and Rasch Measures","volume":"21","author":"Baghaei","year":"2008","journal-title":"Rasch Meas. Trans."},{"key":"ref_38","first-page":"1082","article-title":"DIF matters: A practical approach to test if Differential Item Functioning makes a difference","volume":"20","author":"Tennant","year":"2007","journal-title":"Rasch Meas. Trans."},{"key":"ref_39","doi-asserted-by":"crossref","unstructured":"Christensen, K., Kreiner, S., and Mesbah, M. (2013). Rasch Models in Health, John Wiley & Sons.","DOI":"10.1002\/9781118574454"},{"key":"ref_40","first-page":"328","article-title":"Sample Size and Item Calibration or Person Measure Stability","volume":"7","author":"Linacre","year":"1994","journal-title":"Rasch Meas. Trans."},{"key":"ref_41","unstructured":"Andrich, D., Sheridan, B., and Luo, G. (2010). RUMM2030 (Computer Software and Manual), RUMM Laboratory."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1111\/1467-9515.00336","article-title":"Researching quality of life in early old age: The importance of the sociological dimension","volume":"37","author":"Higgs","year":"2003","journal-title":"Soc. Policy Adm."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"218","DOI":"10.1016\/j.ijchp.2018.05.002","article-title":"Changes in psychological well-being among older Lithuanian city dwellers: Results from a cohort study","volume":"18","author":"Luksiene","year":"2018","journal-title":"Int. J. Clin. Health Psychol."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"429","DOI":"10.1007\/s11136-018-1997-y","article-title":"More than health: Quality of life trajectories among older adults-findings from The Irish Longitudinal Study of Ageing (TILDA)","volume":"28","author":"Ward","year":"2019","journal-title":"Qual. Life Res."}],"container-title":["International Journal of Environmental Research and Public Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1660-4601\/17\/18\/6610\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T10:08:56Z","timestamp":1760177336000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1660-4601\/17\/18\/6610"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,9,11]]},"references-count":44,"journal-issue":{"issue":"18","published-online":{"date-parts":[[2020,9]]}},"alternative-id":["ijerph17186610"],"URL":"https:\/\/doi.org\/10.3390\/ijerph17186610","relation":{},"ISSN":["1660-4601"],"issn-type":[{"value":"1660-4601","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,9,11]]}}}