{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T21:47:20Z","timestamp":1791323240456,"version":"4.3.1"},"reference-count":29,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2023,10,17]],"date-time":"2023-10-17T00:00:00Z","timestamp":1697500800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Sleep Research"],"published-print":{"date-parts":[[2024,5]]},"abstract":"<jats:title>Summary<\/jats:title>\n                  <jats:p>This psychometric pilot study aims to evaluate a new multidimensional simple scale, named the nightmare severity index (NSI) \u2013 close to the existing insomnia (ISI) and hypersomnia (HSI) severity indexes. The NSI encompasses all main dimensions of nightmare disorder, evaluating four subdimensions: frequency, emotional impact, diurnal impact, and nocturnal impact of nightmares. The NSI was completed by a total of 102 patients. The majority of the population consisted of women (64%) and outpatient individuals (76%) diagnosed with mood disorders such as depression (31%) and bipolar disorder (41%). Comorbidity with post\u2010traumatic stress disorder (PTSD) was prevalent (44%), and psychotropic medications were commonly used (47%). Internal validity analyses indicated that the NSI was well suited for exploratory factor analysis. All items demonstrated satisfactory correlations with the factors, and the questionnaire exhibited good internal consistency (Cronbach's alpha &gt;0.7). Higher NSI scores were observed among individuals experiencing nightmare symptoms considering the DSM\u20105\/ICSD\u20103 criteria. In summary, the NSI proves to be a promising and valuable tool for clinical practice, demonstrating good acceptability, internal validity, and the ability to assess nightmare severity.<\/jats:p>","DOI":"10.1111\/jsr.14065","type":"journal-article","created":{"date-parts":[[2023,10,17]],"date-time":"2023-10-17T05:55:42Z","timestamp":1697522142000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["The nightmare severity index (\n                    <scp>NSI<\/scp>\n                    ): A short new multidimensional tool for assessing nightmares"],"prefix":"10.1111","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9121-209X","authenticated-orcid":false,"given":"Pierre A.","family":"Geoffroy","sequence":"first","affiliation":[{"name":"D\u00e9partement de psychiatrie et d'addictologie, AP\u2010HP, GHU Paris Nord, DMU Neurosciences H\u00f4pital Bichat \u2010 Claude Bernard  Paris France"},{"name":"Centre ChronoS GHU Paris \u2010 Psychiatry &amp; Neurosciences  Paris France"},{"name":"NeuroDiderot, Inserm, FHU I2\u2010D2 Universit\u00e9 Paris Cit\u00e9  Paris France"},{"name":"Institute for Cellular and Integrative Neurosciences CNRS UPR 3212  Strasbourg France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5692-5024","authenticated-orcid":false,"given":"Emilie","family":"Stern","sequence":"additional","affiliation":[{"name":"Centre ChronoS GHU Paris \u2010 Psychiatry &amp; Neurosciences  Paris France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2002-6051","authenticated-orcid":false,"given":"Julia","family":"Maruani","sequence":"additional","affiliation":[{"name":"D\u00e9partement de psychiatrie et d'addictologie, AP\u2010HP, GHU Paris Nord, DMU Neurosciences H\u00f4pital Bichat \u2010 Claude Bernard  Paris France"},{"name":"Centre ChronoS GHU Paris \u2010 Psychiatry &amp; Neurosciences  Paris France"},{"name":"NeuroDiderot, Inserm, FHU I2\u2010D2 Universit\u00e9 Paris Cit\u00e9  Paris France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Renaud","family":"Cornic","sequence":"additional","affiliation":[{"name":"D\u00e9partement d'Epid\u00e9miologie, Biostatistique et Recherche Clinique AP\u2010HP, DMU PRISME H\u00f4pital Bichat \u2010 Claude Bernard  Paris France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Balthazar","family":"Bazin","sequence":"additional","affiliation":[{"name":"D\u00e9partement de psychiatrie et d'addictologie, AP\u2010HP, GHU Paris Nord, DMU Neurosciences H\u00f4pital Bichat \u2010 Claude Bernard  Paris France"},{"name":"Centre ChronoS GHU Paris \u2010 Psychiatry &amp; 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