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Vancouver Symptom Score for Dysfunctional Elimination Syndrome: Hindi translation and validation
Aishwarya Madaan1, Viswas Chhapola1, Soumya Tiwari1
1Department of Pediatrics, Kalawati Saran Children's Hospital & Lady Hardinge Medical College, New Delhi, India.
Background:
Bladder and bowel dysfunction (BBD) is a common problem in school-aged children and is evaluated using questionnaires. Among available questionnaires, "Vancouver Symptom Score for Dysfunctional Elimination Syndrome" (VSSDES) is considered superior in validity and reliability. We translated VSSDES into Hindi and performed validity and reliability testing of Hindi-VSSDES in children aged 4-16 years with lower urinary tract dysfunction (LUTD).
Methods:
In this cross-sectional study, we followed Consensus-based Standards for the selection of health Measurement Instruments recommendation to develop Hindi-VSSDES. Forward-translation-harmonization-back-translation-expert committee review-prefinal version sequence of translation was followed by cognitive debriefing. One hundred and sixteen children with symptoms suggestive of LUTD and 106 healthy controls were recruited. Construct validity of Hindi-VSSDES was assessed via structural validity (factor analysis) and hypotheses testing. In addition, test-retest reliability and internal-consistency reliability were assessed.
Results:
Hindi-VSSDES had acceptable face validity. Factor analysis identified four factors representing three domains. All a priori hypotheses were met. The questionnaire displayed excellent convergent validity and discriminative ability (area under receiver operating characteristic curve 0.83). The cutoff scores for screening and diagnosis were 7 and 11, respectively. Scores were comparable whether children self-filled the questionnaire or parents were proxy. Scores in girls were significantly higher. It had an excellent test-retest reliability (intraclass correlation coefficient = 0.96) and Cronbach's ɑ was 0.62. The smallest detectable change was 4.1 points. Median time to complete the questionnaire was 7 min and majority (91%) rated it as easy.
Conclusions:
Hindi-VSSDES is the first validated and reliable Hindi questionnaire for children with BBD. Clinimetric properties of responsiveness and interpretability are yet to be tested.
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