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Obstetric outcomes in women aged 40\u00a0years or older versus women younger than 40\u00a0years were compared for both nulliparous and multiparous women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Of the 15 727 pregnancies (95.7%) that satisfied the inclusion criteria, 606 (3.9%) were in women aged 40\u00a0years or older. Advanced age was independently associated with cesarean delivery, birth and spontaneous preterm labor before 37\u00a0weeks, and low birth weight neonates in nulliparous women, but only with preterm birth before 37\u00a0weeks and cesarean delivery in multiparous women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Obstetric outcome in women aged 40\u00a0years or older was influenced by parity. Cesarean delivery and preterm birth before 37\u00a0weeks were independently associated with older age irrespective of parity. Advanced age is a risk factor for preterm birth.<\/jats:p><\/jats:sec>","DOI":"10.1016\/j.ijgo.2008.05.004","type":"journal-article","created":{"date-parts":[[2008,7,8]],"date-time":"2008-07-08T09:14:12Z","timestamp":1215508452000},"page":"237-241","source":"Crossref","is-referenced-by-count":84,"title":["Effect of parity and advanced maternal age on obstetric outcome"],"prefix":"10.1002","volume":"102","author":[{"given":"Ben Chong\u2010Pun","family":"Chan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Terence Tsz\u2010Hsi","family":"Lao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2008,7,7]]},"reference":[{"key":"e_1_2_5_2_2","series-title":"Monthly vital statistics report","volume-title":"Advance report of final natality statistics, 1993","author":"Ventura S.J.","year":"1995"},{"key":"e_1_2_5_3_2","volume-title":"Report on the Survey of Family Planning in Hong Kong","author":"Family Planning Association of Hong Kong","year":"1993"},{"issue":"4","key":"e_1_2_5_4_2","doi-asserted-by":"crossref","first-page":"330","DOI":"10.1007\/BF03405615","article-title":"What do women know about the risks of delayed childbearing?","volume":"97","author":"Tough S.","year":"2006","journal-title":"Can J Public Health"},{"key":"e_1_2_5_5_2","doi-asserted-by":"publisher","DOI":"10.1093\/humrep\/14.3.833"},{"key":"e_1_2_5_6_2","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.316.7141.1343"},{"key":"e_1_2_5_7_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1479-828X.2005.00333.x"},{"key":"e_1_2_5_8_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.AOG.0000239439.04364.9a"},{"key":"e_1_2_5_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9378(85)80166-6"},{"issue":"4","key":"e_1_2_5_10_2","doi-asserted-by":"crossref","first-page":"499","DOI":"10.1111\/j.1447-0756.1986.tb00225.x","article-title":"Obstetric performance of elderly primiparae","volume":"12","author":"Ho P.C.","year":"1986","journal-title":"Asia\u2010Oceania J Obstet Gynaecol"},{"key":"e_1_2_5_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2006.06.019"},{"key":"e_1_2_5_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2005.03.074"},{"key":"e_1_2_5_13_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.AOG.0000163256.83313.36"},{"key":"e_1_2_5_14_2","doi-asserted-by":"publisher","DOI":"10.1097\/01.AOG.0000140682.63746.be"},{"key":"e_1_2_5_15_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM199003083221004"},{"key":"e_1_2_5_16_2","doi-asserted-by":"publisher","DOI":"10.1080\/07399330500230912"},{"issue":"7","key":"e_1_2_5_17_2","doi-asserted-by":"crossref","first-page":"539","DOI":"10.1002\/(SICI)1096-9136(199807)15:7<539::AID-DIA668>3.0.CO;2-S","article-title":"Definition, diagnosis and classification of diabetes mellitus and its complications. 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