Robson Ten-Group Classification Calculator

Classifies women undergoing childbirth into one of ten mutually exclusive obstetric groups. Includes interpretation, information buttons and a clinical guide.

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Robson Ten-Group Classification
Clinical Decision Tool

Classifies women undergoing childbirth into one of ten mutually exclusive obstetric groups.

Enter or select parity.
Enter or select previous caesarean.
Enter or select labour onset.
Enter or select gestational age.
Enter or select presentation.
Enter or select number of fetuses.
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Clinical Decision Support Only

MediCalc calculators are intended to support qualified healthcare professionals and must not replace professional clinical judgement. Do not enter patient-identifiable information into Saved Progress.

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MedicalC Knowledge Hub

Robson Ten-Group Classification: Clinical Guide

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Classifies women undergoing childbirth into one of ten mutually exclusive obstetric groups.

Overview

Classifies women undergoing childbirth into one of ten mutually exclusive obstetric groups.

Clinical Significance

The result identifies the applicable Robson group for caesarean-section audit and comparison.

When to Use

  • Use as structured clinical decision support when the required data are available and reliable.

How It Is Calculated

  • The displayed variables are combined using the published equation, decision rule or weighted point system.

Interpretation

  • The result identifies the applicable Robson group for caesarean-section audit and comparison.

Worked Example

Enter verified patient data in the displayed units; MedicalC applies the published model.

Limitations

  • Risk and classification tools can be misapplied outside their validated population.
  • Missing, estimated or non-contemporaneous data may materially change the result.

Clinical Pearls

  • Document the inputs, units, date and clinical setting with the result.
  • Use serial scores only when the same instrument and measurement method are used consistently.

Common Mistakes

  • Using the tool without confirming entry criteria.
  • Using approximate or incorrectly converted values.
  • Treating a prognostic score as a standalone treatment decision.

Frequently Asked Questions

What does this tool calculate?

Classifies women undergoing childbirth into one of ten mutually exclusive obstetric groups.

Can this result be used alone?

No. Interpret it with the full clinical assessment, applicable entry criteria and current guidance.

References

  1. Robson MS. Fetal Matern Med Rev. 2001;12:23-39. — Primary or supporting reference for the implemented model.

Reviewed by: MedicalC Clinical Editorial Team
Last reviewed: July 2026

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Reviewed by: MedicalC Clinical Editorial Team Last reviewed: July 2026

Clinical Disclaimer

MedicalC calculators and clinical tools are intended to support healthcare professionals. They do not replace clinical judgement, individual patient assessment, local guidance or specialist advice.

Results should always be interpreted in the context of the patient’s history, examination, investigations, current clinical condition and applicable professional guidance.

Reviewed by: MedicalC Clinical Editorial Team Last reviewed: July 2026
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