{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,6]],"date-time":"2025-02-06T05:25:41Z","timestamp":1738819541976,"version":"3.37.0"},"reference-count":23,"publisher":"MJS Publishing, Medical Journals Sweden AB","license":[{"start":{"date-parts":[[2025,2,5]],"date-time":"2025-02-05T00:00:00Z","timestamp":1738713600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SJU"],"abstract":"<jats: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.\u00a0\nMaterial 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\u00a0expert 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.\u00a0\nResults: 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\u20130.94) 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.\u00a0\nConclusion: 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<\/jats:p>","DOI":"10.2340\/sju.v60.42916","type":"journal-article","created":{"date-parts":[[2025,2,5]],"date-time":"2025-02-05T16:56:35Z","timestamp":1738774595000},"page":"36-42","source":"Crossref","is-referenced-by-count":0,"title":["Validation of a Swedish version of the National Institute of Health \u2013 Chronic Prostatitis Symptom Index"],"prefix":"10.2340","volume":"60","author":[{"given":"Helena","family":"Hallencreutz Grape","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Magnus","family":"Grabe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Philip","family":"Von Rosen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lotta","family":"Renstr\u00f6m Koskela","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Birgitta","family":"Nordgren","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1183","published-online":{"date-parts":[[2025,2,5]]},"reference":[{"key":"98547","unstructured":"European Association of Urology. Chronic pelvic pain. [Internet]. Arnhem, The Netherlands: EAU Guidelines Office; 2023. [updated mars 2024; cited 2024-09-10]. Available from: http:\/\/uroweb.org\/guidelines\/compilations-of-all-guidelines\/"},{"key":"98548","doi-asserted-by":"crossref","unstructured":"Krieger JN, Nyberg JL, Nickel JC. NIH consensus definition and classification of prostatitis. JAMA. 1999;282(3):236\u2013237. https:\/\/doi.org\/10.1001\/jama.282.3.236","DOI":"10.1001\/jama.282.3.236"},{"key":"98549","doi-asserted-by":"crossref","unstructured":"Krieger JN, Lee SWH, Jeon J, et al. Epidemiology of prostatitis. Int J Antimicrob Agents. 2008;31(Supplement 1):85\u201390. https:\/\/doi.org\/10.1016\/j.ijantimicag.2007.08.028","DOI":"10.1016\/j.ijantimicag.2007.08.028"},{"key":"98550","doi-asserted-by":"crossref","unstructured":"Mehik A, Hellstr\u00f6m P, Lukkarinen O, et al. Epidemiology of prostatitis in Finnish men: a population-based cross-sectional study. 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Responsiveness of the National Institutes of Health Chronic Prostatitis Symptom Index (NIH-CPSI). Qual Life Res. 2006;15(2):299\u2013305. https:\/\/doi.org\/10.1007\/s11136-005-1317-1","DOI":"10.1007\/s11136-005-1317-1"},{"key":"98554","doi-asserted-by":"crossref","unstructured":"Schneider H, Br\u00e4hler E, Ludwig M, et al. Two-year experience with the german-translated version of the NIH-CPSI in patients with CP\/CPPS. Urology (Ridgewood, NJ). 2004;63(6):1027\u20131030. https:\/\/doi.org\/10.1016\/j.urology.2004.02.002","DOI":"10.1016\/j.urology.2004.02.002"},{"key":"98555","doi-asserted-by":"crossref","unstructured":"Boateng GO, Neilands TB, Frongillo EA, et al. Best practices for developing and validating scales for health, social, and behavioral research: a primer. Front Public Health. 2018;6:149. https:\/\/doi: 10.3389\/fpubh.2018.00149","DOI":"10.3389\/fpubh.2018.00149"},{"key":"98556","doi-asserted-by":"crossref","unstructured":"Tsang S, Royse CF, Terkawi AS. 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