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. 2020 Aug 17;86(1):101. doi: 10.5334/aogh.2615

Table 4.

Relative contribution made by each Robson group to overall C-Section rate (number of C-Section in each group/number of total yearly C-Section %) (4 years total livebirth n = 2,764,373).

2013 2014 2015 2016 4 Years Total

Robson 1 15.0% 14.9% 14.9% 13.9% 14.7%
Robson 2 13.3% 12.9% 12.8% 1.,0% 12.7%
Robson 3 6.6% 6.4% 5.8% 5.6% 6.1%
Robson 4 6.1% 6.1% 5.9% 5.5% 5.9%
Robson 5 41.7% 42.9% 43.6% 47.1% 43.8%
Robson 6 4.6% 4.4% 4.4% 4.0% 4.4%
Robson 7 3.1% 3.0% 3.1% 3.0% 3.0%
Robson 8 2.3% 2.4% 2.3% 2.4% 2.4%
Robson 9 2.9% 2.8% 2.6% 2.3% 2.7%
Robson 10 4.3% 4.2% 4.7% 4.2% 4.4%
TOTAL 100% 100% 100% 100% 100%