Clinical trial · Observational
Turkish Version of the UCLA Prostate Cancer Index
Cross-Cultural Adaptation, Reliability and Validity of the UCLA Prostate Cancer Index in Turkish Patients
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
This study will evaluate the cross-cultural adaptation, validity, and reliability of the Turkish version of the UCLA Prostate Cancer Index in men diagnosed with prostate cancer. The original instrument will be translated and culturally adapted following standardized procedures. The psychometric properties of the Turkish version will be examined in patients attending routine follow-up visits at a urology clinic. Internal consistency will be assessed using Cronbach's alpha coefficients, and test-retest reliability will be evaluated using intraclass correlation coefficients (ICC) in a subset of participants. Measurement error will be determined by calculating the standard error of measurement (SEM) and the smallest real difference at the 95% confidence level (SRD95). Construct validity will be examined through exploratory factor analysis, and convergent validity will be assessed by testing predefined hypotheses regarding correlations between the UCLA Prostate Cancer Index and established quality-of-life instruments (SF-36 and EORTC QLQ-PR25). The findings are expected to provide a reliable and valid prostate cancer-specific quality-of-life assessment tool for use in Turkish-speaking populations.
Conditions
Conditions (5)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Prostate Cancer (Diagnosis) | Malignant Prostate Neoplasm | CURATED_EXACT | 0.85 |
| Quality of Life | — | UNRESOLVED | — |
| Reliability | — | UNRESOLVED | — |
| UCLA Prostate Cancer Index | — | UNRESOLVED | — |
| Validity | — | UNRESOLVED | — |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Questionnaires | Other | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- label
- Prostate Cancer Patients
- description
- This cohort will consist of men aged 45 years and older who have been diagnosed with prostate cancer and are attending routine follow-up visits at a urology outpatient clinic
- interventionNames
- Other: Questionnaires
Primary outcomes (3)
- measure
- UCLA Prostate Cancer Index
- timeFrame
- 1 hour
- description
- The University of California, Los Angeles (UCLA) Prostate Cancer Index was developed in English in 1998 by Litwin et al. and has been psychometrically validated in prostate cancer populations. It evaluates urinary, sexual, and bowel function and the associated symptom-related bother in men treated for prostate cancer
- measure
- EORTC QLQ-PR25
- timeFrame
- 1 hour
- description
- The EORTC QLQ-PR25 is a prostate cancer-specific module consisting of 25 items and comprising six symptom subdomains: urinary symptoms, incontinence aid, bowel symptoms, hormonal treatment-related symptoms, sexual activity, and sexual functioning
Eligibility
Eligibility (as posted)
- Sex
- Male
Show eligibility criteria text
Inclusion Criteria: * Male patients * Diagnosis of prostate cancer Exclusion Criteria: * Severe psychiatric or mental disorders that may impair the ability to complete the questionnaires properly * Presence of congenital deformities
References
Publications (0)
Data not yet available