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A New Dutch Prediction Model Identifies Nulliparous Women at Higher Risk of Obstetric Anal Sphincter Injury

MedXY Editorial Team•Apr 20, 2026•news
nulliparous womenOASIObstetricsprediction model

Highlights

Researchers in the Netherlands developed and temporally validated two prediction models for obstetric anal sphincter injury (OASI) in nulliparous women: one for spontaneous vaginal delivery (SVD) and one for operative vaginal delivery (OVD).

Both models showed moderate discrimination but excellent calibration, meaning they were better at estimating absolute risk than at sharply separating who will and will not sustain injury.

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This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

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