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Validation of the UDI-6 and the ICIQ-UI SF – Croatian version

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Introduction and hypothesis

Despite the widespread use of UDI-6 and ICIQ-UI SF in Croatia, it remains unknown whether a realiable and valid measure for the population of interest is used. Thus, the aim of this study was to translate, adapt and validate the UDI-6 and the ICIQ-UI SF in Croatia.


The study included a total of 232 consecutive patients with urinary incontinence symptoms. The translation to Croatian followed standardized procedure. All participants underwent urodynamic assesment and completed UDI-6 and ICIQ-UI SF questionnaires at inclusion and 2 weeks after to assess test-retest reliability. Cronbach α coefficient was calculated in order to assess internal consistency.


Both questionnaires had high internal consistency (Cronbach α for UDI-6 and ICIQ-UI SF was .83 and .85, respectively) and high test-retest reliability (intraclass correlation coefficient .99 for instruments). Strong correlation was found between urodynamic findings and total scores in UDI-6 and ICIQ-UI SF (ρ = 0.88 and 0.89, respectively). Women with stress urinary incontinence (SUI) and detrusor overactivity (DOA) group had significantly higher scores on UDI-6 (Mdn = 33.33 and Mdn = 50, respectively) compared to women with no urodynamic abnormality (Mdn = 0; p < 0.001). Women with no urodynamic abnormality scored significantly lower on ICIQ-UI SF (Mdn = 0; p < 0.001) compared to women with SUI (Mdn = 14) and DOA (Mdn = 16). Women with DOA scored worse on Irritative and Obstructive symptoms when comparing with two other groups (p < 0.001), while women with SUI had significantly worse score on Stress symptoms subscale (p < 0.001).


The UDI-6 and ICIQ-UI SF have very good psychometric characteristics and can be used in Croatian urogynecology practice.

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Author information

Authors and Affiliations



M Mikuš: conception of the study, data analysis, data collection, manuscript writing.

M Ćorić: conception of the study, data analysis, interpretation, manuscript writing.

L Matak: data collection and manuscript writing.

B Škegro: manuscript writing, data analysis.

G Vujić: conception of the study, manuscript drafting and reviewing, supervision.

V Banović: analysis, interpretation, editing assistance, supervision.

Corresponding author

Correspondence to Mislav Mikuš.

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Conflict of interest


All authors approved the final version of manuscript.

Additional information

Work was carried out at University Hospital Center Zagreb on Department of Obstetrics and Gynecology, Petrova 13, 10 000 Zagreb.

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Upitnik urinarnih tegoba, kratka verzija (UDI-6)

Za svako pitanje, zaokružite broj koji najbolje opisuje taj problem za Vas u posljednjih mjesec dana.

Jeste li doživjeli i, ako jeste, koliko Vas muči:

  1. 1.

    Učestalo mokrenje

  2. 2.

    Nevoljni gubitak urina zbog hitnoće?

  3. 3.

    Gubljenje mokraće prilikom (fizičke) aktivnosti? (hodanje, trčanje, smijanje, kihanje, kašljanje)

  4. 4.

    Male količine gubitka urina? (kapi)

  5. 5.

    Poteškoće sa pražnjenjem mjehura ili mokrenjem?

  6. 6.

    Bol ili nelagoda u donjem dijelu trbuha, zdjelici ili genitalnom području?

0 = ne uopće; 1 = malo; 2 = umjereno; 3 = prilično.

ICIQ-UI kratka verzija

Velik broj osoba ima povremeno nevoljno bježanje mokraće. Ovim upitnikom želimo otkriti koliki broj osoba ima nevoljno bježanje mokraće i koliku smetnju im to predstavlja. Bili bismo zahvalni ako biste mogli odgovoriti na niže navedena pitanja razmišljajući o tome kakve ste tegobe imali UNAZAD ČETIRI TJEDNA:

  1. 1.

    Koliko često vam bježi mokraća?

0 = nikada; 1 = otprilike jednom tjedno ili rjeđe; 2 = dvaput ili triput tjedno; 3 = otprilike jednom dnevno; 4 = više puta dnevno; 5 = stalno

  1. 2.

    Ovim pitanjem želimo utvrditi koliko prema Vašem mišljenju urina Vam pobjegne. Koliko urina prema Vašem mišljenju Vam uobičajeno pobjegne?

0 = ništa; 2 = mala količina; 4 = umjerena količina; 6 = velika količina

  1. 3.

    Ukupno gledano, koliko značajno bježanje mokraće (urinska inkontinencija) utječe na Vaš svakodnevni život?

rang od 0 = nimalo do 10 = značajno.

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Mikuš, M., Ćorić, M., Matak, L. et al. Validation of the UDI-6 and the ICIQ-UI SF – Croatian version. Int Urogynecol J 31, 2625–2630 (2020).

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