{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T09:05:47Z","timestamp":1762160747133},"reference-count":29,"publisher":"Royal College of Psychiatrists","issue":"6","license":[{"start":{"date-parts":[[2018,1,2]],"date-time":"2018-01-02T00:00:00Z","timestamp":1514851200000},"content-version":"unspecified","delay-in-days":10624,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Br J Psychiatry"],"published-print":{"date-parts":[[1988,12]]},"abstract":"<jats:p>Maternal age is a neglected variable, with obvious implications for aetiology, in psychiatric research. In samples of schizophrenic patients, the distributions by month of birth and maternal age at birth show remarkable anomalies. These phenomena may be connected, because the seasonal distribution of births varies with maternal age, probably as a result of the age-dependent changes of fertility. Preliminary attempts to describe the seasonal effect in schizophrenia as a function of the shift in mean maternal age are not wholly successful at the quantitative level. Southern-hemisphere findings do not seem to fit the predicted pattern. Examples from other areas of research are discussed (sudden unexpected death in infants, congenital dislocation of the hip, and handedness) in which the seasonal distributions of births, and the findings on maternal age, conform to different varieties of the expected relationship.<\/jats:p>","DOI":"10.1192\/bjp.153.6.727","type":"journal-article","created":{"date-parts":[[2008,8,12]],"date-time":"2008-08-12T23:43:23Z","timestamp":1218584603000},"page":"727-733","source":"Crossref","is-referenced-by-count":17,"title":["Schizophrenia, Season of Birth, and Maternal Age"],"prefix":"10.1192","volume":"153","author":[{"given":"Per","family":"Dal\u00e9n","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"170","published-online":{"date-parts":[[2018,1,2]]},"reference":[{"key":"S0007125000224318_ref20","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.114.507.207"},{"key":"S0007125000224318_ref7","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0447.1965.tb06169.x"},{"key":"S0007125000224318_ref27","doi-asserted-by":"publisher","DOI":"10.3109\/00016347809156517"},{"key":"S0007125000224318_ref13","first-page":"119","article-title":"Epidemiology of sudden unexpected death in infants (\u201ccot death\u201d) in Northern Ireland","volume":"25","author":"Froggatt","year":"1971","journal-title":"British Journal of Preventive and Social Medicine"},{"key":"S0007125000224318_ref9","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.131.3.301"},{"key":"S0007125000224318_ref25","doi-asserted-by":"publisher","DOI":"10.1093\/oxfordjournals.aje.a120818"},{"key":"S0007125000224318_ref17","volume-title":"Medical Genetics. Proceedings of the Symposium at Debrecen-Hajduszoboszlo, Hungary 27\u201329 April 1976","author":"Kelemen","year":"1977"},{"key":"S0007125000224318_ref24","first-page":"107","volume-title":"Statistical Review of England and Wales for the Six Years 1940\u20131945, Text, vol. II, Civil","year":"1951"},{"key":"S0007125000224318_ref11","first-page":"11","article-title":"Perinatal observations on the etiology of congenital dislocation of the hip","volume":"119","author":"Dunn","year":"1976","journal-title":"Clinical Orthopaedics and Related Research"},{"key":"S0007125000224318_ref26","first-page":"148","article-title":"Seasonal conception by women in various age groups compared with the season of menarche","volume":"28","author":"Ronnike","year":"1981","journal-title":"Danish Medical Bulletin"},{"key":"S0007125000224318_ref18","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.142.2.204a"},{"key":"S0007125000224318_ref10","unstructured":"Davies A. M. (1970) Uses of medical record linkage for the community: experience in the Jerusalem perinatal study. In Proceedings of the 5th International Scientific Meeting of the International Epidemiological Association, Primosten, Yugoslavia, 1968. Belgrade."},{"key":"S0007125000224318_ref2","doi-asserted-by":"publisher","DOI":"10.1016\/S0010-9452(83)80027-6"},{"key":"S0007125000224318_ref5","doi-asserted-by":"publisher","DOI":"10.1037\/0033-2909.98.3.569"},{"key":"S0007125000224318_ref1","doi-asserted-by":"publisher","DOI":"10.3109\/17453676308999841"},{"key":"S0007125000224318_ref15","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.134.2.169"},{"key":"S0007125000224318_ref19","doi-asserted-by":"publisher","DOI":"10.1001\/archneur.1979.00500380085016"},{"key":"S0007125000224318_ref6","first-page":"15","article-title":"Congenital dislocation of the hip in Budapest, Hungary","volume":"26","author":"Czeizel","year":"1972","journal-title":"British Journal of Preventive and Social Medicine"},{"key":"S0007125000224318_ref14","doi-asserted-by":"publisher","DOI":"10.1192\/bjp.149.5.554"},{"key":"S0007125000224318_ref16","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(84)91831-2"},{"key":"S0007125000224318_ref22","doi-asserted-by":"publisher","DOI":"10.3109\/17453678409155631"},{"key":"S0007125000224318_ref8","volume-title":"Season of Birth: A Study of Schizophrenia and Other Mental Disorders","author":"Dal\u00e9n","year":"1975"},{"key":"S0007125000224318_ref3","first-page":"40","article-title":"Die Beziehung der Schizophrenic zum Alter der Eltern der Patient en","volume":"38","author":"Bojanovsky","year":"1967","journal-title":"Nervenarzt"},{"key":"S0007125000224318_ref23","first-page":"8","article-title":"Environmental influences related to the aetiology of congenital dislocation of the hip","volume":"12","author":"Record","year":"1958","journal-title":"British Journal of Preventive and Social Medicine"},{"key":"S0007125000224318_ref21","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(85)91623-X"},{"key":"S0007125000224318_ref28","doi-asserted-by":"publisher","DOI":"10.2105\/AJPH.70.10.1061"},{"key":"S0007125000224318_ref12","first-page":"164","article-title":"Sudden unexpected death in infants in the Oxford linkage area","volume":"28","author":"Fedrick","year":"1974","journal-title":"British Journal of Preventive and Social Medicine"},{"key":"S0007125000224318_ref4","doi-asserted-by":"publisher","DOI":"10.1093\/schbul\/12.2.173"},{"key":"S0007125000224318_ref29","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8749.1972.tb02628.x"}],"container-title":["British Journal of Psychiatry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0007125000224318","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,19]],"date-time":"2019-05-19T21:50:46Z","timestamp":1558302646000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0007125000224318\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1988,12]]},"references-count":29,"journal-issue":{"issue":"6","published-print":{"date-parts":[[1988,12]]}},"alternative-id":["S0007125000224318"],"URL":"https:\/\/doi.org\/10.1192\/bjp.153.6.727","relation":{},"ISSN":["0007-1250","1472-1465"],"issn-type":[{"value":"0007-1250","type":"print"},{"value":"1472-1465","type":"electronic"}],"subject":[],"published":{"date-parts":[[1988,12]]}}}