TRANSLATION, CROSS-CULTURAL ADAPTATION AND PRELIMINARY EVALUATION OF THE BRAZILIAN VERSIONOF THE PAIN CATASTROPHIZING SCALE-PARENTS

Adaptation and Validation of the International Pelvic Pain Society's Quality of Life Questionnaire in Portuguese

OBJECTIVE

 In the present study, our aim was to translate, adapt, and validate the Pelvic Health History Form (a quality of life [QoL] questionnaire) of the International Pelvic Pain Society (IPPS) from English to Portuguese.

METHODS

 The study was approved by the Ethics and Research Committee (CEP, in the Portuguese acronym) and the IPPS. The "Transcultural Adaptation" method comprised 5 stages: translation, synthesis, backtranslation, expert review, and pretest. Cultural adaptation and validation included cognitive interviews and statistical analysis of unanswered items (> 15%) in 14 clinic patients from CPP and endometriosis clinic at Santa Casa de São Paulo.

RESULTS

 Strong equivalences were established between the USA and Brazil questionnaires in terms of semantics, idioms, experiences, and concepts. Eighteen culturally inappropriate items were identified and adjusted using the revised response rate index. The subjective form underwent rigorous assessments, confirming its accurate measurement of intended targets.

CONCLUSION

 The methodology showed efficiency and equivalence, confirming its validity. The user-friendly format and inclusion of translated, adapted, and validated instruments in Portuguese make the form valuable for evaluating pelvic health, with potential for future research.

Translation, cross-cultural adaptation and validation of the Pain Catastrophizing Scale (PCS) into Bengali in patients with chronic non-malignant musculoskeletal pain

Aim

To develop a culturally adapted and validated Bengali Pain Catastrophizing Scale (BePCS).

Methods

The English PCS was translated, adapted and back‐translated into and from Bengali, pre‐tested by 30 adult patients with chronic non‐malignant musculoskeletal pain. The BePCS was administered twice with 14 days interval to 90 patients. Convergent validity was measured by comparing the BePCS score with scores of the domains physical functioning and mental health of the Bengali Short Form 36, through Spearman's correlation coefficient. Test‐retest reliability was assessed by intraclass correlation coefficient (ICC) and Spearman's rank correlation coefficient and internal consistency by Cronbach's alpha. Content validity was assessed by index for content validity (ICV) and floor and ceiling effects.

Results

The BePCS was well accepted by the patients in the pre‐test. The content validity was excellent, both item ICV and scale ICV were 1. Construct validity: the convergent validity was −0.424 for physical functioning and −0.413 for mental health, indicating a moderate negative correlation. Total BePCS score showed excellent internal consistency with a mean Cronbach's α = 0.92. Internal consistency for subscales rumination, magnification and helplessness, were Cronbach's α 0.903, 0.72 and 0.872 respectively. The test‐retest reliability of total BePCS was 0.78 (P < .001) and for the subscales rumination 0.872 (P < .001), magnification 797 (P < .001) and helplessness 0.927 (P < .001), showing excellent test‐retest reliability.

Conclusions

The interviewer‐administered BePCS appears to be an acceptable, reliable and valid instrument for measuring health‐related quality of life in Bengali speaking patients with chronic non‐malignant musculoskeletal pain. Further evaluation in the general population and in different medical conditions should be done.