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% |