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

Abstract

BackgroundCurrently, no validated instruments are available to measure the health status of Bangladeshi patients with fibromyalgia (FM). The aims of this study were to cross-culturally adapt the modified Fibromyalgia Impact Questionnaire (FIQ) into Bengali (B-FIQ) and to test its validity and reliability in Bangladeshi patients with FM.MethodsThe FIQ was translated following cross-cultural adaptation guidelines and pretested in 30 female patients with FM. Next, the adapted B-FIQ was physician-administered to 102 consecutive female FM patients together with the Health Assessment Questionnaire (HAQ), selected subscales of the SF-36, and visual analog scales for current clinical symptoms. A tender point count (TPC) was performed by an experienced rheumatologist. Forty randomly selected patients completed the B-FIQ again after 7 days. Two control groups of 50 healthy people and 50 rheumatoid arthritis (RA) patients also completed the B-FIQ.ResultsFor the final B-FIQ, five physical function sub-items were replaced with culturally appropriate equivalents. Internal consistency was adequate for both the 11-item physical function subscale (α = 0.73) and the total scale (α = 0.83). With exception of the physical function subscale, expected correlations were generally observed between the B-FIQ items and selected subscales of the SF-36, HAQ, clinical symptoms, and TPC. The B-FIQ was able to discriminate between FM patients and healthy controls and between FM patients and RA patients. Test-retest reliability was adequate for the physical function subscale (r = 0.86) and individual items (r = 0.73-0.86), except anxiety (r = 0.27) and morning tiredness (r = 0.64).ConclusionThis study supports the reliability and validity of the B-FIQ as a measure of functional disability and health status in Bangladeshi women with FM.

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

“…Symptoms that now are considered common in fibromyalgia patients, such as tenderness, balance disturbance, environmental sensitivity and cognitive problems, were not part of the original FIQ 26 . Moreover, since the FIQ was originally intended for women with a certain standard of living in reasonably affluent countries, many validation studies conducted in developing countries usually have required modification from the original FIQ 27–29 . The FIQR was revised from the FIQ to address these limitations and to suit both male and female patients of all socioeconomic levels, while retaining the essential properties of the original version.…”

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

“…With regard to the total FIQ-Pol score, Cronbach's alpha in this scale was 0.84, which indicates good consistency between the questions and proves the high reliability of the scale. This level of internal consistency is slightly lower than the original English version [ 47 ] amounting 0.95 or the Portuguese version (0.94) [ 48 ], but this is not a significant difference, and the internal consistency of the whole scale was also comparable to previous versions, such as Spanish (0.91) [ 43 ], Turkish (0.89) [ 49 ], Japanese (0.90) [ 50 ] or Bengali (0.83) [ 51 ].…”

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

“…Dual focus can lead to the complete or partial replacement of parts of items by others more appropriate to the "target culture". [83][84][85][86][87][88] However, none of the items in the BHAB questionnaire, 28 had a complete replacement in this study. All methodological approaches used in the cross-cultural adaptation of the BHAB questionnaire, 28 were rigorously followed.…”