Validation of a Swedish version of the National Institute of Health - Chronic Prostatitis Symptom Index
(2025) In Scandinavian Journal of Urology 60. p.36-42- Abstract
OBJECTIVE: Chronic primary prostate pain syndrome (PPPS), usually referred to as chronic prostatitis with chronic pelvic pain syndrome (CP/CPPS), affects approximately 10% of all men. The National Institute of Health-Chronic Prostatitis Symptom Index (NIH-CPSI) was developed for clinical assessment and research evaluation of this patient category. The objective of this study was to translate the NIH-CPSI into Swedish, including cross-cultural adaptation and testing it for validity and reliability. Material and methods: Fifty men with chronic PPPS participated in the testing of a new Swedish questionnaire. The initial translation included forward and backward translation followed by a comprehensive review by an expert committee. The... (More)
OBJECTIVE: Chronic primary prostate pain syndrome (PPPS), usually referred to as chronic prostatitis with chronic pelvic pain syndrome (CP/CPPS), affects approximately 10% of all men. The National Institute of Health-Chronic Prostatitis Symptom Index (NIH-CPSI) was developed for clinical assessment and research evaluation of this patient category. The objective of this study was to translate the NIH-CPSI into Swedish, including cross-cultural adaptation and testing it for validity and reliability. Material and methods: Fifty men with chronic PPPS participated in the testing of a new Swedish questionnaire. The initial translation included forward and backward translation followed by a comprehensive review by an expert committee. The preliminary Swedish translation was tested for face validity and test-retest reliability. In all steps of the translation, both medical experts and laymen participated. Results: The Swedish translation showed a high degree of consistency with the original version. A few cultural adaptations were jointly agreed upon. The questionnaire was assessed to be clear to understand and having good face validity. The test-retest reliability showed an intraclass correlation (ICC) of 0.89 (95% confidence interval [CI] = 0.82-0.94) which indicates good to excellent reliability. The standard error of measurement and minimal detectable change were 2.5 and 7.0 respectively. A Bland Altman plot showed no systematic difference between test-retest. Conclusion: This study brings to health care providers and researchers a Swedish version of the internationally recognised NIH-CPSI questionnaire having good validity and reliability, a beneficial addition in the management of men suffering from chronic PPPS in Sweden.
(Less)
- author
- Hallencreutz Grape, Helena ; Grabe, Magnus LU ; Von Rosen, Philip ; Renström Koskela, Lotta and Nordgren, Birgitta
- organization
- publishing date
- 2025-02-05
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Scandinavian Journal of Urology
- volume
- 60
- pages
- 7 pages
- publisher
- Taylor & Francis
- external identifiers
-
- pmid:39908094
- scopus:85218291156
- ISSN
- 2168-1813
- DOI
- 10.2340/sju.v60.42916
- language
- English
- LU publication?
- yes
- id
- a2d70e20-13db-4afc-90f0-13af24685ad2
- date added to LUP
- 2025-06-23 14:24:11
- date last changed
- 2025-07-07 15:00:10
@article{a2d70e20-13db-4afc-90f0-13af24685ad2,
abstract = {{<p>OBJECTIVE: Chronic primary prostate pain syndrome (PPPS), usually referred to as chronic prostatitis with chronic pelvic pain syndrome (CP/CPPS), affects approximately 10% of all men. The National Institute of Health-Chronic Prostatitis Symptom Index (NIH-CPSI) was developed for clinical assessment and research evaluation of this patient category. The objective of this study was to translate the NIH-CPSI into Swedish, including cross-cultural adaptation and testing it for validity and reliability. Material and methods: Fifty men with chronic PPPS participated in the testing of a new Swedish questionnaire. The initial translation included forward and backward translation followed by a comprehensive review by an expert committee. The preliminary Swedish translation was tested for face validity and test-retest reliability. In all steps of the translation, both medical experts and laymen participated. Results: The Swedish translation showed a high degree of consistency with the original version. A few cultural adaptations were jointly agreed upon. The questionnaire was assessed to be clear to understand and having good face validity. The test-retest reliability showed an intraclass correlation (ICC) of 0.89 (95% confidence interval [CI] = 0.82-0.94) which indicates good to excellent reliability. The standard error of measurement and minimal detectable change were 2.5 and 7.0 respectively. A Bland Altman plot showed no systematic difference between test-retest. Conclusion: This study brings to health care providers and researchers a Swedish version of the internationally recognised NIH-CPSI questionnaire having good validity and reliability, a beneficial addition in the management of men suffering from chronic PPPS in Sweden.</p>}},
author = {{Hallencreutz Grape, Helena and Grabe, Magnus and Von Rosen, Philip and Renström Koskela, Lotta and Nordgren, Birgitta}},
issn = {{2168-1813}},
language = {{eng}},
month = {{02}},
pages = {{36--42}},
publisher = {{Taylor & Francis}},
series = {{Scandinavian Journal of Urology}},
title = {{Validation of a Swedish version of the National Institute of Health - Chronic Prostatitis Symptom Index}},
url = {{http://dx.doi.org/10.2340/sju.v60.42916}},
doi = {{10.2340/sju.v60.42916}},
volume = {{60}},
year = {{2025}},
}