Incontinence Severity Index (ISI): Translation and Validation Study of the Russian Version

Area of Science:

• Urology
• Gynecology
• Clinical Research

Background:

• Urinary incontinence significantly impacts women's quality of life.
• Accurate assessment tools are crucial for effective management and treatment.
• The Incontinence Severity Index (ISI) is a valuable measure, but requires adaptation for diverse populations.

Purpose of the Study:

• To translate and culturally adapt the Incontinence Severity Index (ISI) for the Russian population, creating the ISI-R.
• To validate the psychometric properties of the ISI-R in Russian women with urinary incontinence.

Main Methods:

• Forward and back-translation of the ISI into Russian (ISI-R), followed by expert and patient review.
• Validation study involving 213 women with urinary incontinence, assessing ISI-R against the ICIQ-UI SF and a 1-hour pad test.
• Psychometric evaluation included content validity, internal consistency, and correlation analyses.

Main Results:

• The ISI-R demonstrated satisfactory content validity (comprehensibility indices 0.90 for patients, 1.0 for clinicians).
• Acceptable internal consistency (Cronbach's alpha 0.62) and good reliability (ICC 0.70) were observed.
• Strong correlations were found between ISI-R and ICIQ-UI SF (0.82), and moderate agreement with the pad test (Kappa 0.425).

Conclusions:

• The translated and validated ISI-R is an informative instrument for assessing stress urinary incontinence severity in Russian women.
• The ISI-R is suitable for both clinical practice and research settings.
• It is particularly useful for evaluating women undergoing surgical interventions for urinary incontinence.