Robson 10-Group
CS classification (WHO)
Clinician mode
Result
1
Robson Group 1
Nullip, ≥37/40, cephalic, spontaneous labour
- WHO recommends every unit audits CS rate by Robson group, not overall %.
- Group 5 (prev CS, term, cephalic) is the largest contributor to rising CS rates — focus VBAC counselling here.
Reference range
10 mutually-exclusive groups; classify prospectively at delivery.
Common pitfalls
- Group 5 drives most CS-rate increases — focus VBAC counselling here.
- Classify BEFORE mode of delivery is decided for prospective audit.