Validity and reliability of the Turkish version of the Pelvic Floor Distress Inventory-20

Abstract

The aim of this study was to investigate the reliability and validity of the Turkish version of the Pelvic Floor Distress Inventory-20 (PFDI-20). One hundred and twenty-eight women with pelvic floor disorders, including pelvic organ prolapse, urinary incontinence, and anal incontinence were enrolled in the study. The Turkish version was developed using forward back translation. Construct validity was examined by correlation of clinical methods. Interclass correlation coefficients (ICC) compared the PFDI-20 and subscale scores. Cronbach's alpha assessed the internal consistency of the Turkish version. The PFDI-20 has three subscales. The test-retest reliability of the PFDI-20 and subscale was excellent (ICC 0.96 to 0.98, p < 0.001). Cronbach's alpha value (0.79) was moderate for the PFDI-20. Construct validity demonstrated that the PFDI-20 and each subscale displayed significant correlation with other clinical methods used (p < 0.05). The PFDI-20 is a valid and reliable condition-specific questionnaire for Turkish women with pelvic floor disorders.