Cross-cultural adaptation and validation of a Bengali version of the modified fibromyalgia impact questionnaire

Translation, Cross-Cultural Adaptation, and Validation of Measurement Instruments: A Practical Guideline for Novice Researchers

Cross-cultural validation of self-reported measurement instruments for research is a long and complex process, which involves specific risks of bias that could affect the research process and results. Furthermore, it requires researchers to have a wide range of technical knowledge about the translation, adaptation and pre-test aspects, their purposes and options, about the different psychometric properties, and the required evidence for their assessment and knowledge about the quantitative data processing and analysis using statistical software. This article aimed: 1) identify all guidelines and recommendations for translation, cross-cultural adaptation, and validation within the healthcare sciences; 2) describe the methodological approaches established in these guidelines for conducting translation, adaptation, and cross-cultural validation; and 3) provide a practical guideline featuring various methodological options for novice researchers involved in translating, adapting, and validating measurement instruments. Forty-two guidelines on translation, adaptation, or cross-cultural validation of measurement instruments were obtained from "CINAHL with Full Text" (via EBSCO) and "MEDLINE with Full Text". A content analysis was conducted to identify the similarities and differences in the methodological approaches recommended. Bases on these similarities and differences, we proposed an eight-step guideline that includes: a) forward translation; 2) synthesis of translations; 3) back translation; 4) harmonization; 5) pre-testing; 6) field testing; 7) psychometric validation, and 8) analysis of psychometric properties. It is a practical guideline because it provides extensive and comprehensive information on the methodological approaches available to researchers. This is the first methodological literature review carried out in the healthcare sciences regarding the methodological approaches recommended by existing guidelines.

Evaluating the Methodological Approaches of Cross-Cultural Adaptation of the Bedside Handover Attitudes and Behaviours Questionnaire into Portuguese

Nurse managers need culturally adapted assessment instruments to support the implementation of change to Nursing Bedside Handover (NBH) in healthcare institutions. This study aimed to cross-culturally adapt the Bedside Handover Attitudes and Behaviours (BHAB) questionnaire to the Portuguese context and evaluate the methodological approaches used for this purpose. To guide this study, we followed a guideline for cross-cultural translation and adaptation measurement instruments in healthcare. The results of the content validity testing suggested that the BHAB questionnaire is a valid instrument for use in the Portuguese context. To obtain these results we showed 1) using of a new methodological approach, the dual focus, to resolve the divergences and ambiguities in the translators' committee and the multi-professional committee; 2) the lack of a conceptual definition of the construct of the instrument as a requirement to retain items with I-CVI <0.70 after validity relevance pretesting and 3) the cognitive debriefing and relevance pretesting as methodological approaches which can be used alone or together to reinforce the evaluation of cultural relevance of the items. We concluded there is a need for guidelines to support the decision-making process of healthcare researchers with comprehensive information about the different methodological approaches they can follow.

Psychometric properties and validation of the polish version of the Fibromyalgia Impact Questionnaire (FIQ-Pol)

BACKGROUND

Fibromyalgia (FM) is a chronic condition characterized by widespread musculoskeletal pain, fatigue, intestinal disorders, mood swings, and sleep disturbances. To the best of our knowledge, the questionnaire used for assessing problems and difficulties in the functioning of people with FM has not been translated and adapted in Poland so far. The aim of the study was to assess the psychometric properties of the Polish version of the Fibromyalgia Impact Questionnaire (FIQ-Pol).

MATERIAL AND METHOD

The study covered 150 people with FM living in Poland. The measurement reliability, internal structure, repeatability, and validity of the Polish version of the FIQ were examined.

RESULTS

The scale score reliability of the entire tool for the research group was very good. The alpha Cronbach's test result for the whole scale was 0.84. The repeatability of the scale measured by the test-retest method using the interclass correlation coefficients (ICC) was very good and amounted to 0.96. Internal structure suggested by FIQ-Pol authors was confirmed (Confirmatory factor analysis). After introducing modification indices for the entire scale, satisfactory parameter values were obtained, i.e.: RMSEA (0.06), CFI (0.97) and TLI (0.96). Theoretical validity was assessed by correlating the results of the Polish version of the FIQ with the results of the Beck's Depression Inventory (BDI). Both the FIQ-Pol total score and its domains showed strong positive correlations with BDI.

CONCLUSION

The Polish FIQ is a reliable and valid tool to measure the functional disability and health status of Polish people with FM.

A Chinese version of the revised Fibromyalgia Impact Questionnaire: A validation study

OBJECTIVE

The revised Fibromyalgia Impact Questionnaire (FIQR) was developed to measure the quality of life of patients with fibromyalgia in randomized controlled trials and routine care. The purpose of this study was to translate and adapt the FIQR from English to Chinese, and to examine the validity and reliability of the Chinese version of the FIQR (CFIQR).

METHODS

Following the translation of the FIQR, fibromyalgia patients from 6 centers were recruited and completed the CFIQR, the validated Chinese version of the Medical Outcome Study Short Form 36 Health Survey (SF-36) and the Beck Depression Inventory (BDI). In this study, Cronbach's alpha coefficient, test-retest reliability and item total correlation were used for evaluating external and internal reliability; and criterion and structural validity were evaluated.

RESULTS

A total of 200 fibromyalgia patients completed the study. The internal consistency was excellent (Cronbach's alpha .90, .88, .88 and .93 for function, overall impact, symptoms scales and total score, respectively; item-total correlations from .25 to .83.) Test-retest reliability levels of the CFIQR total and subscale scores were strong correlation (intraclass correlation coefficient >0.75). Furthermore, there were significant correlations between the 3 subscale and the total score of the CFIQR and the SF-36, as well as the CFIQR and the BDI, by criterion validity (P < .01). Confirmatory factor analysis gave an acceptable value for structural validity according to the 3-factor structures of function, overall impact and symptoms.

CONCLUSIONS

The CFIQR is a valid and reliable instrument for both clinical practice and research purposes with Chinese speakers globally. [ClinicalTrials.gov: NCT03381131].