{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T11:50:48Z","timestamp":1785412248606,"version":"3.56.0"},"reference-count":40,"publisher":"Royal College of Psychiatrists","issue":"2","license":[{"start":{"date-parts":[[2026,2,16]],"date-time":"2026-02-16T00:00:00Z","timestamp":1771200000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/"}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["BJPsych open"],"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:sec id=\"S2056472425109654_as1\">\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Comorbid obsessive\u2013compulsive disorder (OCD) or obsessive\u2013compulsive symptoms (OCS) are common in people with severe mental illness (SMI; including schizophrenia, bipolar disorder and schizoaffective disorder), with little known about associations with smoking.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S2056472425109654_as2\">\n                    <jats:title>Aims<\/jats:title>\n                    <jats:p>To estimate the association between OCD\/OCS and smoking status among people with SMI in a huge electronic database.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S2056472425109654_as3\">\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>Using the Clinical Records Interactive Search (CRIS) platform for data of service users in the South London and Maudsley (SLaM) NHS Foundation Trust, tobacco smoking status was retrospectively detected through an algorithm of natural language processing technique, categorising into \u2018current smoker\u2019, \u2018ex-smoker\u2019\u00a0and \u2018non-smoker\u2019 by the clinical notes of SMI individuals during 2007\u20132015. A hierarchical assignment rule was applied following the order of \u2018smoker\u2019, \u2018ex-smoker\u2019\u00a0and then \u2018non-smoker\u2019 in an individual. Logistic regression was used to examine the association between smoking and OCS in people with SMI for univariable and multivariable analyses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S2056472425109654_as4\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>We identified 15 479 SMI individuals (56% male; mean age 41 years old), with 90.4% ever smoked. Among them, 2320 (15%) had OCS (without OCD), while 2174 (14%) had a clinical diagnosis of comorbid OCD. After adjusting for demographics and functional status as confounders, both SMI individuals with OCS only and an OCD diagnosis were significantly more likely to have ever smoked (adj. odds ratio 1.47, 95% CI 1.23, 1.76 and adj. odds ratio 1.33, 95% CI 1.11, 1.60, respectively) compared with those without OCD\/OCS.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S2056472425109654_as5\">\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>In this large-scale analysis of people with SMI, we found that individuals with OCS or OCD were more likely to have ever smoked.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1192\/bjo.2025.10965","type":"journal-article","created":{"date-parts":[[2026,2,16]],"date-time":"2026-02-16T05:40:24Z","timestamp":1771220424000},"update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":0,"title":["Smoking and obsessive\u2013compulsive symptoms in patients with schizophrenia, schizoaffective disorder or bipolar disorder using electronic mental health records"],"prefix":"10.1192","volume":"12","author":[{"given":"Hannah R.","family":"Cohen","sequence":"first","affiliation":[{"name":"King\u2019s College London"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8338-7196","authenticated-orcid":false,"given":"Chin-Kuo","family":"Chang","sequence":"additional","affiliation":[{"name":"King\u2019s College London"},{"name":"South London and Maudsley NHS Foundation Trust"},{"name":"National Taiwan University"},{"id":[{"id":"https:\/\/ror.org\/05bqach95","id-type":"ROR","asserted-by":"publisher"}],"name":"National Taiwan University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Deborah","family":"Ahn-Robbins","sequence":"additional","affiliation":[{"name":"King\u2019s College 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