{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T02:41:34Z","timestamp":1777344094208,"version":"3.51.4"},"reference-count":47,"publisher":"Cambridge University Press (CUP)","issue":"10","license":[{"start":{"date-parts":[[2008,2,1]],"date-time":"2008-02-01T00:00:00Z","timestamp":1201824000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Psychol. Med."],"published-print":{"date-parts":[[2008,10]]},"abstract":"<jats:sec id=\"S003329170800278X_sec_a001\"><jats:title>Background<\/jats:title><jats:p>Chemical weapons exercise an enduring and often powerful psychological effect. This had been recognized during the First World War when it was shown that the symptoms of stress mimicked those of mild exposure to gas. Debate about long-term effects followed the suggestion that gassing triggered latent tuberculosis.<\/jats:p><\/jats:sec><jats:sec id=\"S003329170800278X_sec_a002\"><jats:title>Method<\/jats:title><jats:p>A random sample of 103 First World War servicemen awarded a war pension for the effects of gas, but without evidence of chronic respiratory pathology, were subjected to cluster analysis using 25 common symptoms. The consistency of symptom reporting was also investigated across repeated follow-ups.<\/jats:p><\/jats:sec><jats:sec id=\"S003329170800278X_sec_a003\" sec-type=\"results\"><jats:title>Results<\/jats:title><jats:p>Cluster analysis identified four groups: one (<jats:italic>n<\/jats:italic>=56) with a range of somatic symptoms, a second (<jats:italic>n<\/jats:italic>=30) with a focus on the respiratory system, a third (<jats:italic>n<\/jats:italic>=12) with a predominance of neuropsychiatric symptoms, and a fourth (<jats:italic>n<\/jats:italic>=5) with a narrow band of symptoms related to the throat and breathing difficulties. Veterans from the neuropsychiatric cluster had multiple diagnoses including neurasthenia and disordered action of the heart, and reported many more symptoms than those in the three somatic clusters.<\/jats:p><\/jats:sec><jats:sec id=\"S003329170800278X_sec_a004\" sec-type=\"conclusion\"><jats:title>Conclusions<\/jats:title><jats:p>Mild or intermittent respiratory disorders in the post-war period supported beliefs about the damaging effects of gas in the three somatic clusters. By contrast, the neuropsychiatric group did not report new respiratory illnesses. For this cluster, the experience of gassing in a context of extreme danger may have been responsible for the intensity of their symptoms, which showed no sign of diminution over the 12-year follow-up.<\/jats:p><\/jats:sec>","DOI":"10.1017\/s003329170800278x","type":"journal-article","created":{"date-parts":[[2008,2,1]],"date-time":"2008-02-01T06:49:27Z","timestamp":1201848567000},"page":"1419-1426","source":"Crossref","is-referenced-by-count":6,"title":["Psychological effects of chemical weapons: a follow-up study of First World War veterans"],"prefix":"10.1017","volume":"38","author":[{"given":"E.","family":"Jones","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B.","family":"Everitt","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Ironside","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"I.","family":"Palmer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.","family":"Wessely","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2008,2,1]]},"reference":[{"key":"S003329170800278X_ref005","first-page":"272","article-title":"Poison gas and tuberculosis","volume":"1","year":"1918","journal-title":"Lancet"},{"key":"S003329170800278X_ref016","first-page":"271","volume-title":"History of the Great War based on Official Documents. 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