Robson Ten Group Classification System
Obstetrics
Also known as: Robson-Klassifikation (10 Gruppen) · Robson on grup sınıflaması · Robson ten-group classification (caesarean section audit)
What it is for
The Robson classification assigns every woman giving birth to one of ten mutually exclusive groups by parity, previous caesarean section (CS), onset of labour, number of fetuses, presentation/lie and gestational age; it is the WHO standard for comparing CS rates.
Classification
| Category | Description |
|---|---|
| Group 1 | nulliparous, single cephalic, 37 weeks or more, spontaneous labour. |
| Group 2 | nulliparous, single cephalic, 37 weeks or more, labour induced (2a) or CS before labour (2b). |
| Group 3 | multiparous without a previous CS, single cephalic, 37 weeks or more, spontaneous labour. |
| Group 4 | multiparous without a previous CS, single cephalic, 37 weeks or more, labour induced (4a) or CS before labour (4b). |
| Group 5 | all multiparous women with at least one previous CS, single cephalic, 37 weeks or more (5.1 one previous CS; 5.2 two or more). |
| Group 6 | all nulliparous women with a single breech pregnancy. |
| Group 7 | all multiparous women with a single breech pregnancy, including those with a previous CS. |
| Group 8 | all women with a multiple pregnancy, including those with a previous CS. |
| Group 9 | all women with a single pregnancy in transverse or oblique lie, including those with a previous CS. |
| Group 10 | all women with a single cephalic pregnancy before 37 weeks, including those with a previous CS. |
| Reporting | for each group: group size, CS rate within the group, and absolute and relative contribution to the overall CS rate. |
Source
Robson Classification: Implementation Manual
WHO · World Health Organization, Geneva 2017; ISBN 978-92-4-151319-7 (classification by Robson MS, 2001)
- Edition
- WHO Robson Classification Implementation Manual 2017 (WHO global standard since 2015; Robson 2001)
- Checked on
Summary of the published classification in our own words. Not a substitute for the original publication.
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