Abolghasem Nikfallah1, Saeed Rezaali2,3, Nooredin Mohammadi4, Mahboobeh Abrishamkar1, Ehsan Rezaei5, Mohammad Ali Sahraian2,6, Amir H Pakpour7, Mir Saeed Yekaninejad5. 1. Department of Urology, Brain and Spinal Injury Research Center (BASIR), Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran. 2. MS Research Center, Neuroscience Institute, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran. 3. Tehran Medical Branch, Islamic Azad University, Tehran, Iran. 4. Department of Critical Care Nursing, Faculty of Nursing and Midwifery, Centre for Nursing Research, Tehran University of Medical Sciences, Tehran, Iran. 5. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. 6. Department of Neurology, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran. 7. Social Determinants of Health Research Center, Qazvin University of Medical Sciences, Qazvin, Iran.
Abstract
OBJECTIVES: This study aimed to cross-culturally translate the Qualiveen-30 into Persian and validate it in Iranian patients with spinal cord injury (SCI) and multiple sclerosis (MS). METHODS: This was a cross-sectional prospective validation study. The translation and cross-cultural adaptation of the original questionnaire was performed in accordance with published guidelines. A total of 154 patients with SCI or MS who suffered from lower urinary symptoms for at least 6 months were asked to complete the questionnaire in the first visit to the clinic and after 3 weeks. To assess reliability, the internal consistency was assessed by Cronbach's alpha coefficient, and validity was assessed using convergent and discriminant validities. RESULTS: The Cronbach's alpha coefficients for the Qualiveen-30 at two assessments ranged from 0.82 to 0.95, indicating a good internal consistency for the questionnaire. There were high amounts of test-retest reliability for the Qualiveen questionnaire and each of its domains (ICC > 0.90). Also, Qualiveen and its domains had a moderate to high correlation with the International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form (ICIQ-UI SF) (0.36 < r < 0.57) and SF-12 MCS (-0.51 < r < -0.11) and SF-12 PCS (-0.29 < r < -0.19), indicating good convergent validity. Comparison of Qualiveen in groups of income, education and manner of voiding revealed the high discriminative power of this instrument. The hypothesized four factor structure was approved using confirmatory factor analysis (CFA). CONCLUSIONS: In general, the Persian version of Qualiveen-30 performed is a reliable and valid measure for the evaluation of the quality of life related to lower urinary symptoms in patients with SCI or MS.
OBJECTIVES: This study aimed to cross-culturally translate the Qualiveen-30 into Persian and validate it in Iranian patients with spinal cord injury (SCI) and multiple sclerosis (MS). METHODS: This was a cross-sectional prospective validation study. The translation and cross-cultural adaptation of the original questionnaire was performed in accordance with published guidelines. A total of 154 patients with SCI or MS who suffered from lower urinary symptoms for at least 6 months were asked to complete the questionnaire in the first visit to the clinic and after 3 weeks. To assess reliability, the internal consistency was assessed by Cronbach's alpha coefficient, and validity was assessed using convergent and discriminant validities. RESULTS: The Cronbach's alpha coefficients for the Qualiveen-30 at two assessments ranged from 0.82 to 0.95, indicating a good internal consistency for the questionnaire. There were high amounts of test-retest reliability for the Qualiveen questionnaire and each of its domains (ICC > 0.90). Also, Qualiveen and its domains had a moderate to high correlation with the International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form (ICIQ-UI SF) (0.36 < r < 0.57) and SF-12 MCS (-0.51 < r < -0.11) and SF-12 PCS (-0.29 < r < -0.19), indicating good convergent validity. Comparison of Qualiveen in groups of income, education and manner of voiding revealed the high discriminative power of this instrument. The hypothesized four factor structure was approved using confirmatory factor analysis (CFA). CONCLUSIONS: In general, the Persian version of Qualiveen-30 performed is a reliable and valid measure for the evaluation of the quality of life related to lower urinary symptoms in patients with SCI or MS.
Authors: Denise G Tate; Tracey Wheeler; Giulia I Lane; Martin Forchheimer; Kim D Anderson; Fin Biering-Sorensen; Anne P Cameron; Bruno Gallo Santacruz; Lyn B Jakeman; Michael J Kennelly; Steve Kirshblum; Andrei Krassioukov; Klaus Krogh; M J Mulcahey; Vanessa K Noonan; Gianna M Rodriguez; Ann M Spungen; David Tulsky; Marcel W Post Journal: J Spinal Cord Med Date: 2020-03 Impact factor: 1.985