Construct validity of the stroke-specific quality of life questionnaire in ischemic stroke patients.
Arch Phys Med Rehabil
; 92(7): 1113-8, 2011 Jul.
Article
em En
| MEDLINE
| ID: mdl-21704791
ABSTRACT
OBJECTIVES:
To investigate the construct validity of the commonly used 8- and 12-domain versions of the Stroke-Specific Quality of Life (SS-QOL) with a first-order factor model. The better-fitted version was further evaluated by a second-order factor structure model in order to determine whether a summary score is justified.DESIGN:
Cohort study.SETTING:
Outpatient stroke clinic.PARTICIPANTS:
Patients (N=388) with ischemic stroke. INTERVENTION Not applicable. MAIN OUTCOMEMEASURES:
The SS-QOL. We first conducted confirmatory factor analysis (CFA) to evaluate the construct validity of the first-order 8- or 12-domain versions of the SS-QOL. The better-fitted version was then validated by investigating the second-order health-related quality of life (HRQOL) factor.RESULTS:
The 12-domain version, but not the 8-domain version, had sufficient goodness of fit (χ(2)=2041.7, df=1061, χ(2)/df=1.9, comparative fit index [CFI]=0.98, Tucker-Lewis index [TLI]=0.98, and root mean square error of approximation=0.05). All items of the 12-domain version showed acceptable factor loadings (>0.40) and were retained. Furthermore, the second-order CFA fit indices of the 12 domains were acceptable (χ(2)=2630.3, df=1115, χ(2)/df=2.4, CFI=0.97, TLI=0.97, root mean square error of approximation=0.06), indicating that a summary score was justified for representing the overall status of HRQOL.CONCLUSIONS:
Our results show that the construct validity of the 12-domain SS-QOL is well supported for measuring HRQOL in ischemic stroke patients. Thus, we recommend the 12-domain version of the SS-QOL for use in capturing the multiple impacts of stroke as well as overall HRQOL status on the basis of patients' perspectives.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Qualidade de Vida
/
Isquemia Encefálica
/
Inquéritos e Questionários
/
Acidente Vascular Cerebral
Tipo de estudo:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Qualitative_research
/
Risk_factors_studies
Limite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Arch Phys Med Rehabil
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Taiwan