Psychometric Properties of the CASP-12 Scale in Portugal: An Analysis Using SHARE Data
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...
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doaj-2435cccdb8a841299f97bb9d36cc66742020-11-25T02:49:03ZengMDPI AGInternational Journal of Environmental Research and Public Health1661-78271660-46012020-09-01176610661010.3390/ijerph17186610Psychometric Properties of the CASP-12 Scale in Portugal: An Analysis Using SHARE DataCarmen Rodríguez-Blázquez0Oscar Ribeiro1Alba Ayala2Laetitia Teixeira3Lia Araújo4Maria João Forjaz5National Centre of Epidemiology, Carlos III Health Institute, 28029 Madrid, SpainCenter for Health Technology and Services Research (CINTESIS), Department of Education and Psychology of the University of Aveiro, 3810-193 Aveiro, PortugalNational School of Public Health, Carlos III Health Institute, 28029 Madrid, SpainCenter for Health Technology and Services Research (CINTESIS), Institute of Biomedical Sciences Abel Salazar, University of Porto (ICBAS.UP), 4050-313 Porto, PortugalCenter for Health Technology and Services Research (CINTESIS), School of Education, Polytechnic Institute of Viseu (ESEV.IPV), 3504-510 Viseu, PortugalNational Centre of Epidemiology, Carlos III Health Institute, 28029 Madrid, SpainThe 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 ≥50 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: 12–48) correlated with Euro-D (−0.57) and with life satisfaction (0.52). Mean scores were significantly lower for women, people aged ≥75 years and those with activity limitations and worse health status (<i>p</i> < 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, χ<sup>2</sup> (48) = 444.59, <i>p</i> < 0.001), which was confirmed by Rasch analysis (χ<sup>2</sup> (36) = 10.089, <i>p</i> = 0.745, person separation index (PSI) = 0.722 for the 4-factor model). For domains, person separation index ranged 0.31–0.79 and Cronbach’s alpha, 0.37–0.73. In conclusion, the Portuguese version of the CASP-12 scale presents some inadequacies in acceptability, internal consistency and structural validity.https://www.mdpi.com/1660-4601/17/18/6610quality of lifeCASP-12Rasch modelolder adultsPortugal |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Carmen Rodríguez-Blázquez Oscar Ribeiro Alba Ayala Laetitia Teixeira Lia Araújo Maria João Forjaz |
spellingShingle |
Carmen Rodríguez-Blázquez Oscar Ribeiro Alba Ayala Laetitia Teixeira Lia Araújo Maria João Forjaz Psychometric Properties of the CASP-12 Scale in Portugal: An Analysis Using SHARE Data International Journal of Environmental Research and Public Health quality of life CASP-12 Rasch model older adults Portugal |
author_facet |
Carmen Rodríguez-Blázquez Oscar Ribeiro Alba Ayala Laetitia Teixeira Lia Araújo Maria João Forjaz |
author_sort |
Carmen Rodríguez-Blázquez |
title |
Psychometric Properties of the CASP-12 Scale in Portugal: An Analysis Using SHARE Data |
title_short |
Psychometric Properties of the CASP-12 Scale in Portugal: An Analysis Using SHARE Data |
title_full |
Psychometric Properties of the CASP-12 Scale in Portugal: An Analysis Using SHARE Data |
title_fullStr |
Psychometric Properties of the CASP-12 Scale in Portugal: An Analysis Using SHARE Data |
title_full_unstemmed |
Psychometric Properties of the CASP-12 Scale in Portugal: An Analysis Using SHARE Data |
title_sort |
psychometric properties of the casp-12 scale in portugal: an analysis using share data |
publisher |
MDPI AG |
series |
International Journal of Environmental Research and Public Health |
issn |
1661-7827 1660-4601 |
publishDate |
2020-09-01 |
description |
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 ≥50 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: 12–48) correlated with Euro-D (−0.57) and with life satisfaction (0.52). Mean scores were significantly lower for women, people aged ≥75 years and those with activity limitations and worse health status (<i>p</i> < 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, χ<sup>2</sup> (48) = 444.59, <i>p</i> < 0.001), which was confirmed by Rasch analysis (χ<sup>2</sup> (36) = 10.089, <i>p</i> = 0.745, person separation index (PSI) = 0.722 for the 4-factor model). For domains, person separation index ranged 0.31–0.79 and Cronbach’s alpha, 0.37–0.73. In conclusion, the Portuguese version of the CASP-12 scale presents some inadequacies in acceptability, internal consistency and structural validity. |
topic |
quality of life CASP-12 Rasch model older adults Portugal |
url |
https://www.mdpi.com/1660-4601/17/18/6610 |
work_keys_str_mv |
AT carmenrodriguezblazquez psychometricpropertiesofthecasp12scaleinportugalananalysisusingsharedata AT oscarribeiro psychometricpropertiesofthecasp12scaleinportugalananalysisusingsharedata AT albaayala psychometricpropertiesofthecasp12scaleinportugalananalysisusingsharedata AT laetitiateixeira psychometricpropertiesofthecasp12scaleinportugalananalysisusingsharedata AT liaaraujo psychometricpropertiesofthecasp12scaleinportugalananalysisusingsharedata AT mariajoaoforjaz psychometricpropertiesofthecasp12scaleinportugalananalysisusingsharedata |
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1724745081829720064 |