Translation and validation into Brazilian Portuguese of a quality of life instrument for epidermolysis bullosa patients (QOLEB)

This methodological study aimed to adapt the Neuropathy - and Foot Ulcer - Specific Quality of Life instrument - NeuroQol to Brazilian Portuguese and to analyze its psychometric properties. Participants were 50 people with peripheral diabetic neuropathy and foot ulcers. The floor and ceiling effects, the convergent and discriminant validity and the reliability were analyzed. The Cronbach’s alpha coefficient was used to test the reliability and the Pearson’s correlation coefficient to estimate the convergent validity, the Student’s t test was used to evaluate the discriminant validity in the comparison of the NeuroQol scores between participants with and without ulcers. Floor and ceiling effects were found in some domains of the NeuroQol. The reliability was satisfactory. The correlations between the domains of the NeuroQol and the SF-36 were negative, significant and of moderate to strong magnitude. The findings show that the Brazilian version of the NeuroQol is reliable and valid and may be employed as a useful tool for improving nursing care for people with DM.

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Translation and validation of a quality of life instrument for hispanic American cancer patients: methodological considerations

Quality of Life Research ◽

10.1007/bf00434377 ◽

1995 ◽

Vol 4 (1) ◽

pp. 3-11 ◽

Cited By ~ 30

Author(s):

S. Canales ◽

P. A. Ganz ◽

C. A. Coscarelli

Keyword(s):

Quality Of Life ◽

Cancer Patients ◽

Hispanic American ◽

Life Instrument ◽

Methodological Considerations ◽

Translation And Validation

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Psychometric properties of the World Health Organization Quality of Life Instrument-Abbreviated version in Portuguese-speaking adults from three different countries

Trends in Psychiatry and Psychotherapy ◽

10.1590/2237-6089-2017-0058 ◽

2018 ◽

Vol 40 (2) ◽

pp. 104-113 ◽

Cited By ~ 3

Author(s):

Wanderson Roberto da Silva ◽

Fernanda Salloume Sampaio Bonafé ◽

João Marôco ◽

Benvindo Felismino Samuel Maloa ◽

Juliana Alvares Duarte Bonini Campos

Keyword(s):

Quality Of Life ◽

Brazilian Portuguese ◽

World Health ◽

Factorial Validity ◽

World Health Organization Quality ◽

Life Instrument ◽

The World ◽

Organization Quality ◽

Health Organization

Abstract Objective: To evaluate the validity, reliability and invariance of the World Health Organization Quality of Life Instrument-Abbreviated version (WHOQOL-Bref) in Portuguese-speaking adults from three different countries. Methods: A total of 4,020 Brazilian, Portuguese, and Mozambican individuals participated in the study. The total sample was divided into four samples: Brazilian patients (n = 1,120), Brazilian students (n = 1,398), Portuguese students (n = 1,165) and Mozambican students (n = 337). Factorial validity of the WHOQOL-Bref was assessed by confirmatory factor analysis. The convergent and discriminant validities of the instrument were assessed using the average variance extracted (AVE) and the square of Pearson's correlational coefficient (r2), respectively. Composite reliability and ordinal alpha were used as measures of reliability. The metric, scalar, and strict invariance of WHOQOL-Bref was evaluated by multi-group analysis in independent subsamples (within each sample) and only between Brazil and Portugal (transnational invariance), because the configural model of Mozambique was different. Results: The original model of the WHOQOL-Bref did not show a good fit for the samples. Different items were excluded to fit the instrument in each sample (different models for WHOQOL-Bref among Brazilian, Portuguese, and Mozambican samples). AVE and r2 were not adequate; however, the reliability of the WHOQOL-Bref was good, except in the Mozambican sample. Invariance was observed only in independent subsamples. Conclusion: The WHOQOL-Bref fitted models showed adequate factorial validity and invariance in independent subsamples. The transnational non-invariance of the WHOQOL-Bref shows the influence of culture on the operationalization of the quality of life construct.

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