{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,7]],"date-time":"2025-12-07T13:30:41Z","timestamp":1765114241856,"version":"3.46.0"},"reference-count":0,"publisher":"BMJ","issue":"6033","license":[{"start":{"date-parts":[[1976,8,21]],"date-time":"1976-08-21T00:00:00Z","timestamp":209433600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.bmj.com\/company\/legal-information\/terms-conditions\/legal-information\/tdm-licencepolicy"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Br Med J"],"published-print":{"date-parts":[[1976,8,21]]},"abstract":"<jats:p>A previous study of women who had died from myocardial infarction and of a control group of women matched with them for age suggested a fivefold increase in the risk of death from myocardial infarction among users of oral contraceptive aged 40-44 years compared with women not using such preparations. Only a small proportion of women in the infarction and control groups had used oral contraceptives, however, so the margin of error was wide. We therefore investigated a further 54 women in this age group who died from myocardial infarction and compared their oral contraceptive histories with those of age-matched, living controls. Combination of the findings from the present investigation with the previous results have enabled a revised estimate of a threefold increase in risk to be made. Although this risk estimate is similar to that previously shown for a younger age group, the total mortality attributable to complications associated with the use of oral contraceptives remained considerably greater among women over the age of 40.<\/jats:p>","DOI":"10.1136\/bmj.2.6033.445","type":"journal-article","created":{"date-parts":[[2009,4,2]],"date-time":"2009-04-02T18:32:30Z","timestamp":1238697150000},"page":"445-447","source":"Crossref","is-referenced-by-count":86,"title":["Oral contraceptive use in older women and fatal myocardial infarction."],"prefix":"10.1136","volume":"2","author":[{"given":"J I","family":"Mann","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"W H","family":"Inman","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M","family":"Thorogood","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[1976,8,21]]},"container-title":["BMJ"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/data.bmj.org\/tdm\/10.1136\/bmj.2.6033.445","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bmj.2.6033.445","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,7]],"date-time":"2025-12-07T13:28:52Z","timestamp":1765114132000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.bmj.com\/lookup\/doi\/10.1136\/bmj.2.6033.445"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1976,8,21]]},"references-count":0,"journal-issue":{"issue":"6033","published-online":{"date-parts":[[1976,8,21]]},"published-print":{"date-parts":[[1976,8,21]]}},"alternative-id":["10.1136\/bmj.2.6033.445"],"URL":"https:\/\/doi.org\/10.1136\/bmj.2.6033.445","relation":{},"ISSN":["0007-1447","1468-5833"],"issn-type":[{"type":"print","value":"0007-1447"},{"type":"electronic","value":"1468-5833"}],"subject":[],"published":{"date-parts":[[1976,8,21]]}}}