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Analyses include a description of trends and regression analysis of risk factors for postpartum hemorrhage and comparison of predicted and observed rates of postpartum hemorrhage over time. <jats:italic>Results<\/jats:italic>: Increasing proportions of women aged 35\u00a0years or older, born overseas, nulliparous, having cesarean births, having inductions and\/or epidurals, postterm deliveries and large babies were evident. Observed postpartum hemorrhage rates increased from 4.7 to 6.0 per 100 births (<jats:italic>P<\/jats:italic> &lt; 0.001) while expected rates, adjusted for covariates, remained steady (<jats:italic>P<\/jats:italic> = 0.28). <jats:italic>Conclusion<\/jats:italic>: Increases in postpartum hemorrhage are not explained by the changing risk profile of women. It may be that changes in management and\/or reporting of postpartum hemorrhage have resulted in higher postpartum hemorrhage rates.<\/jats:p>","DOI":"10.1016\/j.ijgo.2007.03.011","type":"journal-article","created":{"date-parts":[[2007,5,7]],"date-time":"2007-05-07T14:23:16Z","timestamp":1178547796000},"page":"237-243","source":"Crossref","is-referenced-by-count":165,"title":["Increased postpartum hemorrhage rates in Australia"],"prefix":"10.1002","volume":"98","author":[{"given":"J.B.","family":"Ford","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.L.","family":"Roberts","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.M.","family":"Simpson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"Vaughan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.A.","family":"Cameron","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2007,5,4]]},"reference":[{"key":"e_1_2_6_2_2","volume-title":"Maternal deaths in Australia, 1997\u20131999","author":"Slaytor E.K.","year":"2004"},{"key":"e_1_2_6_3_2","volume-title":"Why mother's die: report on confidential enquiries into maternal deaths in the United Kingdom 2000\u20132002","author":"Department of Health Welsh Office","year":"2005"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-842X.2006.tb00109.x"},{"key":"e_1_2_6_5_2","volume-title":"Postpartum haemorrhage and associated hysterectomy in Victoria Perinatal Society of Australia and New Zealand, 8th Annual Conference","author":"Haynes K.","year":"2004"},{"key":"e_1_2_6_6_2","unstructured":"JosephK.S. 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