Design and internal validation of an obstetric early warning score: secondary analysis of the Intensive Care National Audit and Research Centre Case Mix Programme database

Carle, et al. (2013)
Link to study

The aggregate ICNARC-EWS score is:

For obstetric-related conditions, the ICNARC-EWS recommends:

The results of this study were validated for obstetric-related conditions by Paternina-Caicedo et al. (2017)
Link to external validation