{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T21:31:51Z","timestamp":1773437511988,"version":"3.50.1"},"reference-count":0,"publisher":"Hogrefe Publishing Group","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vasa"],"published-print":{"date-parts":[[2017,10,1]]},"abstract":"<jats:p> Abstract. Background: We performed a meta-analysis to assess the presence of an annual rhythmic variability of ruptured abdominal aortic aneurysm (RAAA) onset. Patients and methods: Eligible studies were observational studies enrolling patients with RAAA and reporting monthly incidence of RAAA. Study-specific estimates, i. e. monthly incidence of RAAA, were combined using the random-effects model. Chronobiological analysis was performed by applying a partial Fourier series to pooled monthly incidence by using the weighted least-squares method. Results: We identified 14 eligible studies enrolling a total of 3,798 patients with RAAA. Pooled monthly incidence of RAAA was 8.7 % in January, 7.7 % in February, 8.7 % in March, 7.3 % in April, 7.8 % in May, 7.2 % in June, 7.0 % in July, 7.0 % in August, 8.1 % in September, 8.8 % in October, 8.4 % in November, and 8.3 % in December. Chronobiological analysis identified a significant (p = 0.0020) annual pattern in the occurrence of RAAA with a peak in December to January and a nadir in June to July. Pooled analysis demonstrated significantly more incidence in December than in June (p = 0.03) as well as in January than in July (p = 0.05). Conclusions: A significant annual pattern in the occurrence of RAAA with a peak in December to January and a nadir in June to July was identified with significantly more incidence in December than in June and in January than in July. <\/jats:p>","DOI":"10.1024\/0301-1526\/a000655","type":"journal-article","created":{"date-parts":[[2017,8,7]],"date-time":"2017-08-07T11:07:57Z","timestamp":1502104077000},"page":"441-445","source":"Crossref","is-referenced-by-count":3,"title":["A meta-analysis of monthly variation in occurrence of abdominal                     aortic aneurysm rupture"],"prefix":"10.1024","volume":"46","author":[{"given":"Hisato","family":"Takagi","sequence":"first","affiliation":[{"name":"Department of Cardiovascular Surgery,                     Shizuoka Medical Center, Shizuoka, Japan"},{"name":"These authors contributed equally to this                     paper"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomo","family":"Ando","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Detroit Medical                     Center, Detroit, MI, USA"},{"name":"These authors contributed equally to this                     paper"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takuya","family":"Umemoto","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Surgery,                     Shizuoka Medical Center, Shizuoka, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"101","container-title":["Vasa"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/econtent.hogrefe.com\/doi\/pdf\/10.1024\/0301-1526\/a000655","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,3,16]],"date-time":"2021-03-16T19:23:13Z","timestamp":1615922593000},"score":1,"resource":{"primary":{"URL":"https:\/\/econtent.hogrefe.com\/doi\/10.1024\/0301-1526\/a000655"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,10,1]]},"references-count":0,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2017,10,1]]}},"alternative-id":["10.1024\/0301-1526\/a000655"],"URL":"https:\/\/doi.org\/10.1024\/0301-1526\/a000655","relation":{},"ISSN":["0301-1526","1664-2872"],"issn-type":[{"value":"0301-1526","type":"print"},{"value":"1664-2872","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,10,1]]}}}