{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T03:10:40Z","timestamp":1793070640938,"version":"4.5.0"},"reference-count":46,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2020,12,4]],"date-time":"2020-12-04T00:00:00Z","timestamp":1607040000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Birth"],"published-print":{"date-parts":[[2021,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>The objective of this study was to describe labor duration of women managed with current obstetric practices in a French national population\u2010based cohort and to assess the association of age and BMI on this duration.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>All women in the French perinatal survey of 2016 with a singleton cephalic fetus, delivering at term after a spontaneous labor were included. Duration of labor was defined as time between admission to the labor ward and birth. Duration of total labor and first and second stage of labor were described. Then, duration of labor was estimated according to maternal age and BMI, using Kaplan\u2010Meier's method and compared with the log\u2010rank test after stratification on parity. Intrapartum cesarean birth was considered as a censoring event. Multivariable modeling was performed using Cox's proportional hazard's method.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Data of 3120 nulliparous and 4385 multiparous women were analyzed. Median labor duration was 6.1\u00a0hours ([5th; 95th percentile]) [1.4; 12.6] and 3.1\u00a0hours [0.3; 8.5] in nulliparous and multiparous women. Multivariable Cox analysis showed no independent association of maternal age and duration of labor. Nulliparous obese women had significantly lower odds of having a shorter labor than women with a BMI\u00a0&lt;\u00a025\u00a0kg\/m<jats:sup>2<\/jats:sup>, HR: 0.75; 95% CI [0.64\u20100.88], but BMI was not associated with labor duration in multiparous women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Our study provides important information for both women and care practitioners on what to expect when entering the labor ward. There appears to be little association between maternal characteristics and labor duration, with the exception of BMI in nulliparous women.<\/jats:p><\/jats:sec>","DOI":"10.1111\/birt.12518","type":"journal-article","created":{"date-parts":[[2020,12,4]],"date-time":"2020-12-04T08:05:01Z","timestamp":1607069101000},"page":"86-95","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Contemporary duration of spontaneous labor and association with maternal characteristics: A French national population\u2010based study"],"prefix":"10.1111","volume":"48","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6101-1200","authenticated-orcid":false,"given":"Aude","family":"Girault","sequence":"first","affiliation":[{"name":"INSERM UMR 1153 Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epop\u00e9) Center for Epidemiology and Statistics Sorbonne Paris Cit\u00e9, FHU PREMA Universit\u00e9 de Paris  Paris France"},{"name":"Department of Obstetrics Cochin Port Royal Hospital Assistance Publique\u2010H\u00f4pitaux de Paris H\u00f4pital Cochin Port Royal Port Royal Maternity Universit\u00e9 de Paris  Paris France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"B\u00e9atrice","family":"Blondel","sequence":"additional","affiliation":[{"name":"INSERM UMR 1153 Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epop\u00e9) Center for Epidemiology and Statistics Sorbonne Paris Cit\u00e9, FHU PREMA Universit\u00e9 de Paris  Paris France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fran\u00e7ois","family":"Goffinet","sequence":"additional","affiliation":[{"name":"INSERM UMR 1153 Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epop\u00e9) Center for Epidemiology and Statistics Sorbonne Paris Cit\u00e9, FHU PREMA Universit\u00e9 de Paris  Paris France"},{"name":"Department of Obstetrics Cochin Port Royal Hospital Assistance Publique\u2010H\u00f4pitaux de Paris H\u00f4pital Cochin Port Royal Port Royal Maternity Universit\u00e9 de Paris  Paris France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Camille","family":"Le Ray","sequence":"additional","affiliation":[{"name":"INSERM UMR 1153 Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epop\u00e9) Center for Epidemiology and Statistics Sorbonne Paris Cit\u00e9, FHU PREMA Universit\u00e9 de Paris  Paris France"},{"name":"Department of Obstetrics Cochin Port Royal Hospital Assistance Publique\u2010H\u00f4pitaux de Paris H\u00f4pital Cochin Port Royal Port Royal Maternity Universit\u00e9 de Paris  Paris France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,12,4]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2019.05.041"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1097\/00006250-195512000-00001"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1067\/mob.2002.127142"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3181fdef6e"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/1471-0528.14019"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2010.04.014"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pmed.1002492"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2011.06.014"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e318259589c"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2007.06.058"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3182a9c92c"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e318236fbd1"},{"key":"e_1_2_8_14_1","unstructured":"EUROPERISTAT.EUROPEAN PERINATAL HEALTH REPORT Health and Care of Pregnant Women and Babies in Europe in 2015."},{"issue":"232","key":"e_1_2_8_15_1","first-page":"1","article-title":"Mean Age of Mothers is on the Rise: United States, 2000\u20102014","author":"Mathews TJ","year":"2016","journal-title":"NCHS Data Brief"},{"key":"e_1_2_8_16_1","unstructured":"INSERM DRESS.Enqu\u00eate nationale p\u00e9rinatale. Rapport 2016 2017."},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1067\/mob.2000.106249"},{"key":"e_1_2_8_18_1","first-page":"1","article-title":"Prepregnancy body mass index by maternal characteristics and state: Data from the birth certificate, 2014","volume":"65","author":"Branum AM","year":"2016","journal-title":"Natl Vital Stat Rep"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.3109\/14767058.2010.531313"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejogrb.2013.08.021"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.2.5655.477"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ogc.2017.08.012"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0000000000003618"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jogoh.2017.09.002"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.healthplace.2011.06.002"},{"key":"e_1_2_8_26_1","first-page":"159","article-title":"The influence of birth weight on labor in nulliparas","volume":"76","author":"Turner MJ","year":"1990","journal-title":"Obstet Gynecol"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1097\/MD.0000000000013901"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1213\/ANE.0000000000000832"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2006.06.016"},{"key":"e_1_2_8_30_1","first-page":"233","article-title":"Are there differences in the first stage of labor between Black and White women?","volume":"32","author":"Tuuli MG","year":"2015","journal-title":"Am J Perinatol"},{"key":"e_1_2_8_31_1","doi-asserted-by":"publisher","DOI":"10.1016\/0029-7844(95)00423-8"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jmwh.2009.08.004"},{"key":"e_1_2_8_33_1","doi-asserted-by":"publisher","DOI":"10.1111\/jmwh.12704"},{"key":"e_1_2_8_34_1","doi-asserted-by":"publisher","DOI":"10.2147\/LRA.S46686"},{"key":"e_1_2_8_35_1","doi-asserted-by":"publisher","DOI":"10.1067\/mob.2000.105899"},{"key":"e_1_2_8_36_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1447-0756.2011.01568.x"},{"key":"e_1_2_8_37_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1526-9523(02)00367-7"},{"key":"e_1_2_8_38_1","doi-asserted-by":"publisher","DOI":"10.1111\/birt.12191"},{"key":"e_1_2_8_39_1","first-page":"485","article-title":"Active management of labor as an alternative to cesarean section for dystocia","volume":"63","author":"O\u2019Driscoll K","year":"1984","journal-title":"Obstet Gynecol"},{"issue":"9","key":"e_1_2_8_40_1","first-page":"CD004907","article-title":"Package of care for active management in labour for reducing caesarean section rates in low\u2010risk women","volume":"16","author":"Brown HC","year":"2013","journal-title":"Cochrane Database Syst Rev"},{"key":"e_1_2_8_41_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2004.05.072"},{"key":"e_1_2_8_42_1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM199509213331201"},{"key":"e_1_2_8_43_1","doi-asserted-by":"publisher","DOI":"10.14814\/phy2.12305"},{"key":"e_1_2_8_44_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2012.06.044"},{"key":"e_1_2_8_45_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.2006.01233.x"},{"key":"e_1_2_8_46_1","first-page":"225","article-title":"Intrauterine pressure during the second stage of labor in obese women","volume":"103","author":"Buhimschi CS","year":"2004","journal-title":"Obstet Gynecol"},{"key":"e_1_2_8_47_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0175306"}],"container-title":["Birth"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/birt.12518","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/birt.12518","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/birt.12518","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,1]],"date-time":"2023-09-01T05:28:37Z","timestamp":1693546117000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/birt.12518"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,12,4]]},"references-count":46,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2021,3]]}},"alternative-id":["10.1111\/birt.12518"],"URL":"https:\/\/doi.org\/10.1111\/birt.12518","archive":["Portico"],"relation":{},"ISSN":["0730-7659","1523-536X"],"issn-type":[{"value":"0730-7659","type":"print"},{"value":"1523-536X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,12,4]]},"assertion":[{"value":"2020-03-12","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-11-13","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-12-04","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}