Validation of the Chinese version of the Pelvic Floor Distress Inventory-20 (PFDI-20) according to the COSMIN checklist
Abstract
Introduction and hypothesis The objective of this study was to translate the short version of the Pelvic Floor Distress Inventory (PFDI-20) into Chinese and to evaluate its psychometric properties in Chinese women with symptomatic pelvic floor dysfunction according to the Consensus-Based Standards for the Selection of Health Status Measurement Instruments (COSMIN) checklist.Methods Between October 2017 and May 2018, a cross-sectional analysis of the clinical data of 126 patients who met the inclusion criteria was performed. The patients completed the questionnaires at the baseline (T1), 1-2 weeks later (T2), and 3 months after surgery (T3). Reliability testing included internal consistency, test-retest reliability, and measurement error. The methodical tests for validity were content validity, criterion validity, construct validity, and hypothesis testing. Responsiveness was also taken into consideration.Results One hundred twenty-six patients completed all questionnaires. Internal consistency, measured by Cronbach's alpha value, was good, and the test-retest reliability was high, with an intraclass correlation coefficient (ICC) of 0.99. Construct validity was verified by factor analysis. All assumptions were confirmed, and there were no ceiling or floor effects in this study. Spearman's correlation coefficient between the PFDI-20 and the Pelvic Floor Impact Questionnaire (PFIQ-7) was 0.867, showing a significant correlation. Furthermore, the minimal important change (MIC) of 50.0 was less than the smallest detectable change (SDC) of 18.36, indicating the sufficient responsiveness.Conclusions The Chinese version of the PFDI-20 developed in this study is a reliable and valid instrument that provides good responsiveness to clinical changes.
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“In addition, patients were asked to complete questionnaires, including the 20-item Pelvic Floor Distress Inventory (PFDI-20) [14], the seven-item Pelvic Floor Impact Questionnaire (PFIQ-7) [15], and the 12-item Pelvic Organ Prolapse/Urinary Incontinence Sexual Function Questionnaire (PISQ-12) [16].”
Self-citation
- Authors
- Ma, Y., Xu, T., Zhang, Y., Mao, M., Kang, J., & Zhu, L.
- Affiliations
- Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
- Corresponding author
- Zhu, Lan
- Venue
- International Urogynecology Journal
- Published
- 2019-02-04
- Volume
- 30
- Issue
- 7
- Pages
- 1127-1139
- ISSN
- 0937-3462 (ISSN-L)
- 1433-3023
- OpenAlex
- W2911720928
- Cited by
- 64
- References
- 21
- Citations by year
- 2026: 13 · 2025: 6 · 2024: 6 · 2023: 12 · 2022: 11 · 2021: 6 · 2020: 8 · 2019: 1
- FWCI
- 4.93
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- International Urogynecology Journal (publishedVersion)
- PubMed (publishedVersion)
- Funders
- CAMS Initiative for Innovative Medicine(CAMS-I2M (2017-I2M-1-002)
- Topics
- Health Sciences › Medicine › Rheumatology › Pelvic floor disorders treatments
- Social Sciences › Education › Health Education and Validation
- Health Sciences › Medicine › Urology › Urinary Bladder and Prostate Research
- Keywords
- PFDI-20, Chinese translation, pelvic floor dysfunction, psychometric validation, COSMIN checklist, questionnaire reliability, construct validity, responsiveness, minimal important change, Pelvic Floor Impact Questionnaire
- MeSH terms
- Aged, China, Cross-Sectional Studies, Factor Analysis, Statistical, Female, Humans, Middle Aged, Quality of Life, Surveys and Questionnaires, Severity of Illness Index, Translations, Reproducibility of Results, Pelvic Organ Prolapse
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