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• W4311060833 abstract "<ns3:p><ns3:bold>Background: </ns3:bold>Perineal trauma is a common complication of childbirth and can have serious impacts on long-term health. Few studies have examined the combined effect of multiple risk factors. We developed and internally validated a risk prediction model to predict third and fourth degree perineal tears using data from a general obstetric population.</ns3:p><ns3:p> <ns3:bold>Methods: </ns3:bold>Risk prediction model using data from all singleton vaginal deliveries at Cork University Maternity Hospital (CUMH), Ireland during 2019 and 2020.<ns3:bold> </ns3:bold>Third/fourth degree tears were diagnosed by an obstetrician or midwife at time of birth and defined as tears that extended into the anal sphincter complex or involved both the anal sphincter complex and anorectal mucosa. We used univariable and multivariable logistic regression with backward stepwise selection to develop the models. Candidate predictors included infant sex, maternal age, maternal body mass index, parity, mode of delivery, birthweight, post-term delivery, induction of labour and public/private antenatal care. We used the receiver operating characteristic (ROC) curve C-statistic to assess discrimination, and bootstrapping techniques were used to assess internal validation.</ns3:p><ns3:p> <ns3:bold>Results: </ns3:bold>Of 8,403 singleton vaginal deliveries, 8,367 (99.54%) had complete data on predictors for model development. A total of 128 women (1.53%) had a third/fourth degree tear.<ns3:bold> </ns3:bold>Three variables remained in the final model: nulliparity, mode of delivery (specifically forceps delivery or ventouse delivery) and increasing birthweight (per 100 gram increase) (C-statistic: 0.75, 95% CI: 0.71, 0.79). We developed a nomogram to calculate individualised risk of third/fourth degree tears using these predictors. Bootstrapping indicated good internal performance.</ns3:p><ns3:p> <ns3:bold>Conclusions: </ns3:bold>Use of our nomogram can provide an individualised risk assessment of third/fourth degree tears and potentially aid counselling of women on their potential risk.</ns3:p>" @default.
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• W4311060833 date "2022-12-01" @default.
• W4311060833 modified "2023-10-12" @default.
• W4311060833 title "Predicting perineal trauma during childbirth using data from a general obstetric population" @default.
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• W4311060833 doi "https://doi.org/10.12688/hrbopenres.13656.1" @default.
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