{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T00:36:53Z","timestamp":1747183013885,"version":"3.40.5"},"reference-count":30,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2021,12,17]],"date-time":"2021-12-17T00:00:00Z","timestamp":1639699200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Aust NZ J Obst Gynaeco"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Queensland introduced a colour\u2010coded cardiotocograph (CTG) classification system (green, blue, yellow and red) to complement the Royal Australian and New Zealand College of Obstetricians and Gynaecologists prose\u2010based classification system of \u2018low, unlikely, maybe or likely\u2019 fetal compromise.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aims<\/jats:title><jats:p>The aim of the study was to determine the clinical impact of the introduction of the colour\u2010coded CTG classification system compared to the prose\u2010based system. We hypothesised there would be no change in the rate of operative delivery for intrapartum fetal compromise (OD\u2010IFC).<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>This retrospective non\u2010inferiority study from November 2014 to May 2018 used routinely collected data from the Mater Mother\u2019s Hospital. Non\u2010insured women with a singleton, non\u2010anomalous, cephalic fetus at term, attempting a vaginal birth with continuous intrapartum CTG were included. The primary outcome was OD\u2010IFC. Secondary outcomes included various obstetric and perinatal outcomes. Non\u2010inferiority analysis was performed with a pre\u2010specified non\u2010inferiority margin of 2% risk difference.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Eleven thousand seven hundred and twenty\u2010seven participants were included. The OD\u2010IFC rate was similar across the study groups (prose\u2010based 15.1% vs colour\u2010coded 15.3%, adjusted odds ratio (aOR) 1.02, 95% CI 0.93\u20131.13) with the adjusted risk difference of 0.29% (95% CI \u22120.98 to 1.56), which did not exceed the inferiority margin. There were more spontaneous (aOR 1.11, 95% CI 1.04\u20131.19) and fewer instrumental (aOR 0.87, 95% CI 0.80\u20130.95) vaginal births in the colour\u2010coded cohort. There were no differences in neonatal outcomes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Reassuringly, the colour\u2010coded CTG classification system was non\u2010inferior to the prose\u2010based system, did not influence OD\u2010IFC but was associated with more spontaneous vaginal deliveries.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ajo.13469","type":"journal-article","created":{"date-parts":[[2021,12,18]],"date-time":"2021-12-18T07:18:26Z","timestamp":1639811906000},"page":"370-375","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["The impact on obstetric and perinatal outcomes in term infants following the introduction of a colour\u2010coded, hierarchical cardiotocography classification system: A retrospective non\u2010inferiority study"],"prefix":"10.1111","volume":"62","author":[{"given":"Meg","family":"Willis","sequence":"first","affiliation":[{"name":"Mater Research 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