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Validity evidence of the Self-Care of Chronic Illness Inventory: Brazilian version
Mariana Tereza Monferdini Ruoco Acettia1, Michele Nakahara-Melo2, Fernanda Ayache Nishi3
1Unimed Leste Paulista. Espírito Santo do Pinhal. São Paulo, São Paulo, Brasil.
Objective:
To generate evidence regarding the validity of the internal structure and consistency of the Self-Care of Chronic Illness Inventory - Brazilian Version and its relationship with health-related quality of life.
Method:
A psychometric study of instrument validation was carried out with 227 adults (female=74.89%; mean age= 58.03±13.2 years) with chronic illnesses who answered the instrument adapted for Brazil. Internal structural validity was studied by confirmatory factor analysis, the relationship with health-related quality of life was analyzed by correlation with health-related quality of life, and internal consistency by the omega coefficient.
Results:
The theoretical structure of the instrument was confirmed with three domains and good fit indexes and 18 of the 20 items had factorial loadings above 0.3; the omega coefficient was 0.929; and participants with better self-care scores had better quality of life scores.
Conclusion:
The Self-Care of Chronic Illness Inventory - Brazilian Version provides good evidence of internal validity and consistency for studying self-care in chronic diseases in Brazil.
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