Reliability and validity of the Tigrigna version of the Pelvic Floor Distress Inventory-Short Form 20 (PFDI-20) and Pelvic Floor Impact Questionnaire-7 (PFIQ-7)

Gelila K Goba; Awol Yeman Legesse; Yibrah Berhe Zelelow; Mussie Alemayehu Gebreselassie; Rebecca G Rogers; Kimberly S Kenton; Margaret G Mueller

doi:10.1007/s00192-018-3583-9

Reliability and validity of the Tigrigna version of the Pelvic Floor Distress Inventory-Short Form 20 (PFDI-20) and Pelvic Floor Impact Questionnaire-7 (PFIQ-7)

Int Urogynecol J. 2019 Jan;30(1):65-70. doi: 10.1007/s00192-018-3583-9. Epub 2018 Mar 13.

Authors

Gelila K Goba¹, Awol Yeman Legesse², Yibrah Berhe Zelelow², Mussie Alemayehu Gebreselassie³, Rebecca G Rogers⁴, Kimberly S Kenton⁵, Margaret G Mueller⁵

Affiliations

¹ Department of Obstetrics and Gynecology, University of Illinois at Chicago, 820 S. Wood Street, MC 808, Chicago, IL, 60612, USA. ggoba@uic.edu.
² Department of Obstetrics and Gynecology, Mekelle University, Mekelle, Ethiopia.
³ School of Public Health, Mekelle University, Mekelle, Ethiopia.
⁴ Department of Women's Health, Dell Medical School, The University of Texas, Austin, USA.
⁵ Department of Obstetrics and Gynecology, Northwestern University, Chicago, USA.

PMID: 29536138
DOI: 10.1007/s00192-018-3583-9

Abstract

Introduction and hypothesis: This study adapted the Pelvic Floor Distress Inventory-Short Form 20 (PFDI-20) and the Pelvic Floor Impact Questionnaire-7 (PFIQ-7) into the Tigrigna language of northern Ethiopia and validated the their reliability and validity through patient interviews.

Methods: Expert translation, cognitive interviewing, and patient interviews using translated questionnaires were conducted. A subset of women was reinterviewed 1 week later. Intraclass correlation coefficients (ICC), Bland-Altman analysis, and Cronbach's alpha values were assessed. Total and subscale scores were compared between women with and without pelvic floor disorders (PFDs) using the Mann-Whitney U test. Spearman's correlation coefficients were used to compare severity of pelvic organ prolapse (POP) stage according to the POP Quantification (POP-Q) system and PFDI-20 and PFIQ-7 and subscale scores.

Results: Ten women participated in cognitive interviewing and 118 age 49 ± 10 years, mean ± standard deviation (SD) with and without PFDs were interviewed using the translated questionnaires, both of which presented adequate face validity and test-retest reliability [intraclass correlation coefficient (ICC) 0.765-0.969, p < 0.001]. Construct validity was significant between clinical symptoms and full forms (p <0.001) and their subscales (p <0.001), except for the Pelvic Organ Prolapse Impact Questionnaire (POPIQ). Differences between first and second scores on total PFDI-20 and PFIQ-7 and subscales largely fell within 0 ± 1.96 SD. Cronbach's alpha values were 0.891-0.930 for PFDI-20 and 0.909-0.956 for PFIQ-7 (p < 0.001). Analysis of known groups showed differences PFDI-20 and PFIQ-7 scores between women with and without PFDs (p <0.001 for full forms and subscales, except for anal incontinence (AI) and the Urinary Impact Questionnaire (UIQ)/POPIQ.

Conclusion: The translated Tigrigna versions of the PFDI-20 and PFIQ-7 questionnaires are reliable, valid, and feasible tools to evaluate symptoms and quality of life (QoL) of Tigrigna-speaking Ethiopian women with PFDs.

Keywords: Ethiopia; PFDI-20; PFIQ-7; Pelvic floor disorder.

Publication types

Validation Study

MeSH terms

Adult
Cross-Sectional Studies
Ethiopia
Female
Humans
Middle Aged
Pelvic Floor Disorders / diagnosis
Pelvic Floor Disorders / psychology*
Pelvic Organ Prolapse / diagnosis
Pelvic Organ Prolapse / psychology*
Reproducibility of Results
Surveys and Questionnaires*