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dc.contributor.authorØstborg, Tilde Broch
dc.contributor.authorRomundstad, Pål Richard
dc.contributor.authorEggebø, Torbjørn Moe
dc.date.accessioned2017-10-23T06:55:43Z
dc.date.available2017-10-23T06:55:43Z
dc.date.created2017-06-15T13:08:46Z
dc.date.issued2017
dc.identifier.citationActa Obstetricia et Gynecologica Scandinavica. 2017, 96 (1), 120-127.nb_NO
dc.identifier.issn0001-6349
dc.identifier.urihttp://hdl.handle.net/11250/2461379
dc.description.abstractIntroduction The aim of the study was to compare the duration of active phase of labor in women with spontaneous or induced start of labor. Material and methods An observational cohort study was performed at Stavanger University Hospital in Norway between January 2010 and December 2013. During the study period 19 524 women delivered. Data for the study were collected from an electronic birth journal. Women with previous cesarean section, multiple pregnancy, breech or transverse lie, preterm labor or prelabor cesarean section were excluded. Analyses were stratified between nulliparous and parous women. Active phase of labor was defined when contractions were regular, with cervix effaced and dilated 4 cm. The main outcome measure was duration of active phase of labor. Results The active phase was longer in induced labors than in labors with spontaneous onset in nulliparous women. The estimated median duration using survival analyses was 433 min (95% confidence interval 419–446) in spontaneous vs. 541 min (95% confidence interval 502–580) in induced labors [unadjusted hazard ratio 0.76 (95% confidence interval 0.71–0.82) and adjusted hazard ratio 0.88 (95% confidence interval 0.82–0.95)]. In parous women, a one minus survival plot showed that induced labors had shorter duration before six hours in active labor, but after six hours, induced labors had longer duration. The overall difference in parous women was small and probably of little clinical importance. Conclusion The active phase of labor was longer in induced than in spontaneous labors in nulliparous women.nb_NO
dc.language.isoengnb_NO
dc.publisherWileynb_NO
dc.titleDuration of the active phase of labor in spontaneous and induced laborsnb_NO
dc.typeJournal articlenb_NO
dc.description.versionsubmittedVersionnb_NO
dc.source.pagenumber120-127nb_NO
dc.source.volume96nb_NO
dc.source.journalActa Obstetricia et Gynecologica Scandinavicanb_NO
dc.source.issue1nb_NO
dc.identifier.doi10.1111/aogs.13039
dc.identifier.cristin1476379
dc.description.localcodeThis is the pre-peer reviewed version of the following article: [Duration of the active phase of labor in spontaneous and induced labors], which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/aogs.13039/epdf. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.nb_NO
cristin.unitcode194,65,20,0
cristin.unitcode194,65,15,0
cristin.unitnameInstitutt for samfunnsmedisin og sykepleie
cristin.unitnameInstitutt for klinisk og molekylær medisin
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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