{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T14:23:38Z","timestamp":1785767018205,"version":"3.56.0"},"reference-count":18,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T00:00:00Z","timestamp":1758585600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100014188","name":"Ministry of Science and ICT, South Korea","doi-asserted-by":"publisher","award":["RS-2024-00357530"],"award-info":[{"award-number":["RS-2024-00357530"]}],"id":[{"id":"10.13039\/501100014188","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Vestibular Research"],"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Persistent postural-perceptual dizziness (PPPD) is a common yet challenging functional vestibular disorder. The Niigata PPPD Questionnaire (NPQ) is a simple diagnostic tool developed to assess the severity and presence of PPPD.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To validate the Korean version of the NPQ and to evaluate its reliability and diagnostic performance in differentiating PPPD from other vestibular disorders in comparison to Dizziness Handicap Inventory (DHI).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We recruited 255 patients, 150 with PPPD, 64 with peripheral vestibular disorders, and 41 with central vestibulopathy at a tertiary dizziness center in South Korea from January to December 2024. The NPQ was translated into Korean with a forward\u2013backward translation procedure. In addition, all participants completed DHI, the Beck Depression Inventory-II (BDI-II), the State-Trait Anxiety Inventory (STAI), and the Perceived Stress Scale (PSS) to assess dizziness-related disability and psychological symptoms. Internal consistency was assessed using Cronbach\u2019s alpha. Discriminative ability was evaluated through between-group comparisons, correlation analyses, and receiver operating characteristic (ROC) curve analyses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The Korean NPQ demonstrated excellent internal consistency (Cronbach\u2019s \u03b1 = 0.93). The total and subscale scores of the NPQ were significantly higher in PPPD than in other vestibular disorder groups. ROC analysis yielded an area under the curve of 0.670 with a cut-off score at 15.5 (sensitivity 59.3%, specificity 71.4%). The visual stimulation subscale showed the highest AUC (0.703). A logistic regression combined model using NPQ visual stimulation and dizziness handicap inventory (DHI) emotional subscales achieved the best diagnostic accuracy (AUC = 0.756). The NPQ total score was moderately correlated with the DHI (\u03c1 = 0.65) and modestly correlated with psychological symptoms.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The Korean NPQ is reliable and provides acceptable diagnostic utility for distinguishing PPPD. Combining NPQ and DHI subscales enhances diagnostic accuracy, supporting its use as a screening tool in diverse clinical settings, including telemedicine.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/09574271251382800","type":"journal-article","created":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T17:42:15Z","timestamp":1758649335000},"page":"154-163","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Diagnostic utility of Niigata Persistent Postural-Perceptual Dizziness (PPPD) Questionnaire (NPQ) for PPPD in comparison to dizziness handicap inventory"],"prefix":"10.1177","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2027-6341","authenticated-orcid":false,"given":"Hyo-Jung","family":"Kim","sequence":"first","affiliation":[{"name":"Seoul National University Bundang Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1014-000X","authenticated-orcid":false,"given":"Jae Han","family":"Park","sequence":"additional","affiliation":[{"name":"Daegu Catholic University Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1508-2024","authenticated-orcid":false,"given":"Ji-Soo","family":"Kim","sequence":"additional","affiliation":[{"name":"Seoul National University"},{"name":"Seoul National University Bundang Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2025,9,23]]},"reference":[{"key":"e_1_3_6_2_2","doi-asserted-by":"publisher","DOI":"10.1055\/s-0039-3402736"},{"key":"e_1_3_6_3_2","doi-asserted-by":"publisher","DOI":"10.3233\/VES-170622"},{"key":"e_1_3_6_4_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00415-020-09831-2"},{"key":"e_1_3_6_5_2","doi-asserted-by":"publisher","DOI":"10.1097\/MAO.0000000000002325"},{"key":"e_1_3_6_6_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0291002"},{"key":"e_1_3_6_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00405-023-08038-1"},{"key":"e_1_3_6_8_2","doi-asserted-by":"publisher","DOI":"10.3389\/fneur.2024.1388805"},{"key":"e_1_3_6_9_2","first-page":"307","article-title":"The study of standardization for a Korean adaptation of self-report measures of dizziness","volume":"3","author":"Han GC","year":"2004","unstructured":"Han GC, Lee EJ, Lee JH, et al. 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