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Of veterans with subthreshold PTSD at wave 1, 34.3% developed PTSD compared with 7.6% of trauma-exposed veterans without subthreshold PTSD (relative risk ratio 6.4). Among veterans with subthreshold PTSD, specific PTSD symptoms, greater age, cognitive difficulties, lower dispositional optimism and new-onset traumas predicted incident PTSD. Results suggest that preventive interventions targeting subthreshold PTSD and associated factors may help mitigate risk for PTSD in USA veterans.<\/jats:p>","DOI":"10.1192\/bjp.2021.17","type":"journal-article","created":{"date-parts":[[2021,3,19]],"date-time":"2021-03-19T13:13:33Z","timestamp":1616159613000},"page":"456-459","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":14,"title":["Subthreshold post-traumatic stress disorder as a risk factor for post-traumatic stress disorder: results from a sample of USA veterans"],"prefix":"10.1192","volume":"219","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5561-6414","authenticated-orcid":false,"given":"Robert H.","family":"Pietrzak","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frances G.","family":"Javier","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John H.","family":"Krystal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven M.","family":"Southwick","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"170","published-online":{"date-parts":[[2021,3,19]]},"reference":[{"key":"S0007125021000179_ref11","first-page":"22","article-title":"The Mini-International Neuropsychiatric Interview (M.I.N.I.): the development and validation of a structured diagnostic psychiatric interview for DSM-IV and ICD-10","volume":"59","author":"Sheehan","year":"1998","journal-title":"J Clin Psychiatry"},{"key":"S0007125021000179_ref4","doi-asserted-by":"publisher","DOI":"10.1176\/appi.ajp.158.9.1467"},{"key":"S0007125021000179_ref10","volume-title":"The PTSD Checklist for DSM-5 (PCL-5)","author":"Weathers","year":"2013"},{"key":"S0007125021000179_ref20","doi-asserted-by":"publisher","DOI":"10.1097\/HRP.0000000000000186"},{"key":"S0007125021000179_ref6","doi-asserted-by":"publisher","DOI":"10.1037\/a0022294"},{"key":"S0007125021000179_ref9","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpsychires.2019.09.005"},{"key":"S0007125021000179_ref3","doi-asserted-by":"publisher","DOI":"10.1037\/tra0000078"},{"key":"S0007125021000179_ref1","doi-asserted-by":"publisher","DOI":"10.1002\/wps.20313"},{"key":"S0007125021000179_ref2","doi-asserted-by":"publisher","DOI":"10.1016\/j.janxdis.2010.11.010"},{"key":"S0007125021000179_ref14","volume-title":"National Epidemiologic Survey on Alcohol and Related Conditions. 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